Papers - AKATSU Kan
about 267-
Performance Comparison of High-Speed Motors for Electric Vehicle
Aiso, K.; Akatsu, K
World Electric Vehicle 13 ( 57 ) 2022.3 [Reviewed]
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Single Work
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EV Motor System With Magnetic Gear Satisfying High‐Power Density and High Torque Density
Kohei Aiso, Kan Akatsu, Yasuaki Aoyama
Electrical Engineering in Japan 2025.1
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Publisher：Wiley Joint Work
<jats:title>ABSTRACT</jats:title><jats:p>Technical innovations for the downsizing of motor systems are necessary to realize energy savings and roomy and comfortable car interior space in electric vehicles. In this paper, a novel motor drive system with multiple high‐speed motors and a magnetic multiple spur gear (MMSG) is proposed for electric vehicles. Furthermore, the factors leading to a high‐power density and high torque density in an MMSG system are clarified.</jats:p>
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EV Motor System with Magnetic Gear Satisfying High Power Density and High Torque Density
Aiso Kohei, Akatsu Kan, Aoyama Yasuaki
IEEJ Transactions on Industry Applications 144 ( 7 ) 557 - 567 2024.7 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
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Mitigating Vibration from Dynamic Eccentricity in Motors: A Triple Three-Phase Winding Approach
Yang Kan, Akatsu Kan, Okazaki Kodai, Miyama Yoshihiro
IEEJ Transactions on Industry Applications 144 ( 4 ) 248 - 256 2024.4 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
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Structure and Control of Next Generation EV Traction Motor
AKATSU Kan
Journal of The Society of Instrument and Control Engineers 62 ( 11 ) 679 - 684 2023.11 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Instrument and Control Engineers Single Work
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Yoshida Akito, Akatsu Kan
IEEJ Transactions on Industry Applications 143 ( 8 ) 579 - 589 2023.8 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
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Coupler Design for Wireless High-Power Transfer Using 13.56MHz
Sasahara Izumi, Akatsu Kan
IEEJ Transactions on Industry Applications 143 ( 7 ) 547 - 552 2023.7 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
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Imbalanced Force Suppression Due to Static Eccentricity by using Triple Three-phase Winding Motor
Yang Kan, Akatsu Kan, Okazaki Kodai, Miyama Yoshihiro
IEEJ Journal of Industry Applications 12 ( 4 ) 763 - 772 2023.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
<p>Permanent magnet synchronous machines (PMSMs) are widely used in a variety of applications. The static eccentricity of the rotor is a common fault in the fabrication process. These faults cause imbalanced electromagnetic force and exert unexpected vibration and acoustic noise during the design process. In the worst case, it causes bearing or motor failure. This research investigates the impact of this fault on the temporal and spatial harmonic distribution of gap flux density and electromagnetic force. Moreover, a compensation method has been proposed to suppress imbalanced force due to static eccentricity by using a triple three-phase winding motor. By controlling the three inverters independently, the winding current of each group can be controlled. Therefore, the gap flux density and electromagnetic force in each group can be brought into a desired state. Therefore, the imbalanced electromagnetic force can be restored using this system. In this paper, the effectiveness of the proposed method is verified by Finite Element Analysis (FEA) and experiment.</p>
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Study of Winding Structure to Reduce Harmonic Currents in Dual 3-phase Motor
Akito Yoshida and Kan Akatsu
World Electr. Veh. J. 14 ( 4 ) 2023.4 [Reviewed]
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Single Work
Other Link： https://www.mdpi.com/2032-6653/14/4/100
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Kan Yang, Kan Akatsu
IEEJ Journal of Industry Applications 12 ( 2 ) 194 - 203 2023.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Single Work
<p>In recent years, progress in power semiconductor switching devices has created more additional advantages that can be realized using multi-phase inverter-fed motors. The authors propose a MATRIX motor to realize electric motors with higher functionalities than conventional electric motors. Since the MATRIX motor is driven by H-bride inverters connected with each phase winding, it has a high degree of freedom in control. Moreover, these inverters can change their connections to different phase coils to realize a wide operating range. The voltage equation of each mode can be expressed using the transformation matrix when the winding connection is changed. Therefore, we call the proposed motor MATRIX motor. In addition, since motors are being applied to various applications that operate within proximity of people, further quietness of the motor is required. In this paper, we propose a method to suppress vibration caused by a specific harmonic order radial direction electromagnetic force via teeth flux density control using the MATRIX motor. The specific order radial force and vibration are suppressed by utilizing two features of the MATRIX motor. One is a high degree of freedom of current control owing to multi-phase drive and the other is local flux density observation. The effectiveness of the proposed method was clarified using experimental results.</p>
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IEEJ Journal of Industry Applications 12 ( 3 ) 409 - 417 2023.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Single Work
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Study of Winding Structure to Reduce Harmonic Currents in Dual 3-phase Motor
81. Akito Yoshida and Kan Akatsu
World Electr. Veh. J. 14 ( 4 ) 2023 [Reviewed]
Authorship：Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Single Work
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Watahiki Masanori, Akatsu Kan
IEEJ Transactions on Industry Applications 142 ( 11 ) 835 - 844 2022.11 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Single Work
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Did You Get Back to Where You Once Belonged?
Akatsu Kan
IEEJ Transactions on Industry Applications 142 ( 11 ) NL11_1 - NL11_1 2022.11 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Single Work
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Kodai Okazaki, Kan Yang, Kan Akatsu
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) 2022.5
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
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Imbalanced Force Suppression Due to Static Eccentricity by Using Triple Three-phase Winding Motor
Kan Yang, Kan Akatsu, Kodai Okazaki, Yoshihiro Miyama
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) 2022.5
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
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Kohei Aiso, Kan Akatsu, Yasuaki Aoyama
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) 2022.5
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
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Characteristics and Design of an SRM using Grain-Oriented Electrical Steel Sheets
Tsuchiya Yuzuki, Akatsu Kan
IEEJ Transactions on Industry Applications 42 ( 1 ) 1 - 8 2022.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
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Minho Jang, Kan Akatsu
IEEJ Journal of Industry Applications 11 ( 1 ) 148 - 156 2022.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
<p>In this study, an effective combination of methods to estimate the magnet operating points in a permanent magnet synchronous motor (PMSM) is proposed. First, the magnet temperature estimation is compensated with the initial temperature and magnet loss based on the error between the estimated temperature obtained using the thermal equivalent circuit and the estimated temperature obtained using the flux observer. In addition, stator loss is compensated based on the error between the measured temperature and estimated temperature obtained using the thermal equivalent circuit. Then, the flux linkage observer is compensated with the d/q inductance value using the magnetic equivalent circuit. A method of estimating the magnetic flux density of a permanent magnet is designed to estimate the magnetic flux density of the motor using a magnetic equivalent circuit reflecting the value of the measured magnet temperature and magnetic flux density in the permanent magnet's B-H curve. Unlike the rotor temperature, the stator temperature can be easily measured, and the magnet operating point estimation can be designed as a more accurate and error-resistant estimation method. Furthermore, simulation and experimental verification demonstrate the effectiveness of the proposed method.</p>
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An Injected High Frequency Current Reference Generation Method for Torque Ripple Reduction in PMSM
Nishio Taichi, Yamauch Ryosuke, Kondo Masahiko, Akatsu Kan
IEEJ Transactions on Industry Applications 141 ( 11 ) 848 - 855 2021.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
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Get Back to Where You Once Belonged!
Akatsu Kan
IEEJ Transactions on Industry Applications 141 ( 9 ) NL9_1 - NL9_1 2021.9
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Single Work
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Dual Three-Phase-Winding Permanent-Magnet Synchronous Motors: An Investigation of the Optimal Carrier Phase-Shift Angle
Yoshihiro Miyama, Kan Akatsu
IEEE Industry Applications Magazine 27 ( 6 ) 12 - 21 2021.8 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Kodai Okazaki, Kan Akatsu, Kan Yang
2021 IEEE International Electric Machines & Drives Conference (IEMDC) 2021.5
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
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Analysis and Design of Novel Structured High Torque Density Magnetic-Geared Permanent Magnet Machine
SOHEIL YOUSEFNEJAD, HOSSEIN HEYDARI, KAN AKATSU, JONG-SUK RO
IEEE Access 9 64574 - 64586 2021.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Kan Akatsu, Keita Fukuda
World Electric Vehicle Journal 12 ( 2 ) 61-1 - 61-17 2021.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：MDPI AG Joint Work
<jats:p>This paper presents some techniques for driving novel 5 phase dual winding PMSM (Permanent Magnet Synchronous Motor) for the in-wheel motor. The motor realizes winding change over characteristics that can expand driving area from high-torque mode to high-speed mode due to the dual winding construction. However, the dual winding structure makes a high-current ripple due to high coupling between windings. The paper proposes some control methods to reduce the current ripple, including inverter career ripple. The paper also presents harmonics current injection, such as the 3rd harmonics current injection method, to reduce the torque ripple and generate higher torque.</jats:p>
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Prospects of the International Conference
Akatsu Kan
IEEJ Transactions on Industry Applications 141 ( 3 ) NL3_1 - NL3_1 2021.3
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Single Work
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Driving an Open-Winding Structure PMSM Using Third Harmonic Current Control
Kazunari Honda, Kan Akatsu
IEEJ Transactions on Industry Applications 141 ( 1 ) 39 - 45 2021.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
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Yang Kan, Akatsu Kan
2021 IEEE International Future Energy Electronics Conference (IFEEC) 2021.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE (InstituteofElectricalandElectronics Engineers) Joint Work
In recent years, multi-phase inverter-fed motors that realize additional advantages have been actively studied because of developments of power semiconductor switching devices. The authors also have proposed a MATRIX motor driven by H-bride inverters connected with each phase winding individually for the purpose of realizing electric motors with high functionalities. In addition, since motors are being applied to various applications that is close to people, further quietness of motor is required. In this paper, a method is proposed that 2(nd) order radial direction electromagnetic force can be suppressed by teeth flux density control in the MATRIX motor. By utilizing high degree of freedom of current control owe to multi-phase drive and local flux density observation capability of the MATRIX motor, the 2(nd) order radial force on each tooth and vibration are suppressed. The effectiveness of the proposed method was clarified by simulation results.
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Consideration of driving area expansion for Flux Switching Motor with Variable Flux Magnet
Ryosuke Minegishi, Kan Akatsu
2020 23rd International Conference on Electrical Machines and Systems (ICEMS) 2020.11
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
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Comparison between analysis and experimental result of iron loss in SRM
Takayuki Hara, Kan Akatsu
2020 23rd International Conference on Electrical Machines and Systems (ICEMS) 2020.11
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
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A motor control method by using Machine learning
Kano Matsuura, Kan Akatsu
2020 23rd International Conference on Electrical Machines and Systems (ICEMS) 652 - 655 2020.11
Language：The in addition, foreign language Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
It is believed that further popularization of highly efficient PMSM in recent years can contribute to energy consumption reduction. Therefore, further development of electric motor technology is required. The control method that can deal with nonlinear elements is proposed by performing control using RT-simulation. However, the conventional RT-simulation based control can not cope with changes in motor parameters. To solve this problem, We propose to make the motor model which can respond with the change of motor parameters by using machine learning algorithm.
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Proposal and Machine Characteristics of a Self-Cooling SRM for Electric Hand Tools
Koinuma, Koichi; Akatsu, Kan
IEEJ Transactions on Industry Applications 140 ( 11 ) 826 - 833 2020.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
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The Study on Sensor Fault Detection and Algorithm Transition using Adaptive Threshold in Position Self-sensing Control for IPMSM
Dongwoo Lee, Kan Akatsu
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 2020.10 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
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A 13.56 MHz Antenna Design With The Efficiency Improvement For The Wireless Power Transfer System
N. T. Cuong, N. K. Trung, K. Akatsu,
International Journal of Engineering Research and Technology 13 ( 7 ) 1735 - 1741 2020.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Novel Flux-Switching Magnetic Gear for High-Speed Motor Drive System
Kohei Aiso , Kan Akatsu , Yasuaki Aoyama
IEEE Transactions on Industrial Electronics 68 ( 6 ) 4727 - 4736 2020.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work
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Akatsu Kan
IEEJ Transactions on Industry Applications 139 ( 10 ) NL10_1 - NL10_1 2019
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Single Work
Other Link： https://ci.nii.ac.jp/naid/130007722415
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A Novel Reluctance Magnetic Gear for High-Speed Motor
Aiso Kohei, Akatsu Kan, Aoyama Yasuaki
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 55 ( 3 ) 2690 - 2699 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Selection Method of Controller Gains for Position Sensorless Control of IPMSM Drives
Lee Dongwoo, Akatsu Kan
IEEJ Journal of Industry Applications 8 ( 4 ) 720 - 726 2019 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
<p>Rotor position and speed in sensorless control based on back-electromotive force (back-EMF) estimation can be estimated from back-EMF estimator and rotor position estimator in an interior permanent magnet synchronous motor (IPMSM). Even if the rotor position and speed are correctly estimated by these estimators in the steady state, the performance of estimators in the transient state may be degraded by the gain design of estimators. This paper describes the design method of estimators and current controller to ensure stable sensorless control of IPMSM not only in the steady state but also in the transient state such as for torque or speed variation. The performance of our proposed method is verified through a simulation and experimental results.</p>
Other Link： https://ci.nii.ac.jp/naid/130007673048
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Sasaki Kensuke, Gagas Brent S., Inoue Keisuke, Fukushige Takashi, Kato Takashi, Akatsu Kan, Lorenz … Show more authors
Sasaki Kensuke, Gagas Brent S., Inoue Keisuke, Fukushige Takashi, Kato Takashi, Akatsu Kan, Lorenz Robert D. Hide authors
IEEJ Transactions on Industry Applications 139 ( 6 ) 550 - 557 2019 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
<p>This paper discusses a magnetization state (MS) manipulation method at high speeds with low vehicle vibration for variable flux permanent magnet synchronous machines (VF-PMSMs). VF-PMSMs can achieve lower driving cycle losses compared to conventional PMSMs by changing the MS in the medium speed and medium torque range. To maximize this advantage for reducing driving cycle losses, the MS manipulation capability in this range, which requires higher voltage to change MS than that required in the low speed range, is critical. However, the capability has not been researched very well. In this paper, a MS manipulating method using a straight line stationary flux linkage trajectory (SLλ<sup>s</sup>T) is investigated and evaluated. This method uses a straight line flux linkage trajectory in the stationary frame so that the DC bus voltage utilization is maximized while the flux linkage achieves the desired magnetizing point without demagnetization. This method was experimentally evaluated with EV-scale VF-PMSMs, and it was found to achieve full magnetization at a speed almost two times higher than the base speed. The effect of this method on vehicle vibration was studied via simulation using the experimental result and a simple vehicle model that emulates a vehicle powertrain for traction applications.</p>
Other Link： https://ci.nii.ac.jp/naid/130007657742
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Basic experiment on high power transmission at 13.56MHz wireless power transfer for electric vehicle
Kuramoto Satoshi, Akatsu Kan
2019 IEEE VEHICLE POWER AND PROPULSION CONFERENCE (VPPC) 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Lee Dongwoo, Akatsu Kan
45TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2019) 910 - 915 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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5-phase double winding PMSM with integrated SiC inverter for In-Wheel Motor
Fukuda Keita, Akatsu Kan
2019 22ND INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2019) 4775 - 4779 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Study of High-speed SRM with Amorphous steel sheet for EV
Tomioka Taketo, Akatsu Kan
2019 22ND INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2019) 5515 - 5520 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Measurement method of the B-H characteristics in open circuit for Nd-Fe-B magnet
Hieda Naoya, Akatsu Kan
2019 22ND INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2019) 4968 - 4971 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Method of Torque Ripple Reduction by Using Harmonic Current Injection in PMSM
Nishio Taichi, Ryosuke Yamauchi, Masahiko Kondo, Akatsu Kan
2019 IEEE 4TH INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE (IFEEC) 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Honda Kazunari, Akatsu Kan
2019 IEEE 4TH INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE (IFEEC) 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Yang Kan, Akatsu Kan, Miyama Yoshihiro, Okazaki Kodai
2019 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC) 1863 - 1868 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Lee Dongwoo, Akatsu Kan
2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA) 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Study of High Speed SRM Using Vector Control for Electric Vehicle
Aiso K., Takahashi M., Akatsu K.
2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA) 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Optimal Carrier Phase-shift Angle on Dual Three-Phase Windings Permanent Magnet Synchronous Motor
Miyama Yoshihiro, Akatsu Kan
2019 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC) 1362 - 1367 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Investigation of current measurement method of bonding wire by using GMR sensor
Tamori Tatsuru, Akatsu Kan
2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA) 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Okazaki Kodai, Miyama Yoshihiro, Akatsu Kan
2019 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC) 671 - 677 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design challenges for 13.56MHz 10 kW resonant inverter for wireless power transfer systems
Nguyen Kien Trung, Akatsu Kan
2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA) 2019 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Wide Speed Range Operation by Low-Voltage Inverter-Fed MATRIX Motor for Automobile Traction Motor
Hijikata Hiroki, Sakai Yuki, Akatsu Kan, Miyama Yoshihiro, Arita Hideaki, Daikoku Akihiro
IEEE TRANSACTIONS ON POWER ELECTRONICS 33 ( 8 ) 6887 - 6896 2018.8 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Attenuate Influence of Parasitic Elements in 13.56-MHz Inverter for Wireless Power Transfer Systems
Nguyen Kien Trung, Ogata Takuya, Tanaka Shinichi, Akatsu Kan
IEEE TRANSACTIONS ON POWER ELECTRONICS 33 ( 4 ) 3218 - 3231 2018.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Miyama Yoshihiro, Ishizuka Mitsuru, Kometani Haruyuki, Akatsu Kan
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 54 ( 6 ) 5998 - 6004 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Miyama Yoshihiro, Akatsu Kan
2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 1574 - 1580 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Sakamoto Shunya, Okajima Yudai, Akatsu Kan
2018 21ST INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 1213 - 1217 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Scalability and Key Tradeoffs of Variable Flux PM Machines for EV Traction Motor Systems
Athavale Apoorva, Reigosa David, Akatsu Kan, Sakai Kazuto, Lorenz Robert D.
2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2292 - 2299 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Study of Inverter integrated SRM with Vector Control
Matsumoto Masaki, Akatsu Kan
2018 21ST INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 1169 - 1174 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Study of Switched Reluctance Motor Directly Driven by Commercial Three-phase Power Supply
Takahashi Masaki, Aiso Kohei, Akatsu Kan
2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA) 3186 - 3191 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Cuong Nguyen Tri, Akatsu Kan
2018 IEEE INTERNATIONAL POWER ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC) 1995 - 1999 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Behavior Modeling of Permanent Magnet Synchronous Motors Using Flux Linkages for Coupling with Circuit Simulation
Kaimori Hiroyuki, Akatsu Kan
IEEJ JOURNAL OF INDUSTRY APPLICATIONS 7 ( 1 ) 56 - 63 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Miyama Yoshihiro, Kometani Haruyuki, Akatsu Kan
2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA) 711 - 717 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Novel Magnetic Multiple Spur Gear for High Speed Motor System
Aiso Kohei, Akatsu Kan, Aoyama Yasuaki
2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3310 - 3316 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Novel Self Cooling SRM for Electric Hand Tools
Koinuma Koichi, Aiso Kohei, Akatsu Kan
2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 6116 - 6120 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Multi-phase Inverter-fed MATRIX Motor for High Efficiency Driving
Hijikata Hiroki, Sakai Yuki, Akatsu Kan, Miyama Yoshihiro, Arita Hideaki, Daikoku Akihiro
IEEJ Transactions on Industry Applications 138 ( 3 ) 257 - 264 2018 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
<p>This paper describes the high efficiency capability of multi-phase inverter-fed permanent magnet synchronous motors. In this type of motor, each armature winding is connected with an independent H-bridge inverter. The type of construction achieves a wide range of operation and high efficiency driving. Firstly, it is confirmed that the motor can expand the operating range by using winding reconfiguration. The inverter configurations are capable of changing their connections to different coil groups in the armature winding. To achieve high efficiency driving, a large torque production method and iron loss suppression method are proposed. With the proposed method of construction of the motor drive, the flux waveform in each stator tooth can observe and control in spite of the full-pitch distributed winding. The combination of controllable flux and arbitrary current excitation can generate a large output torque and reduce the iron loss. The simulation and experimental results show that the proposed method can significantly reduce the total loss.</p>
Other Link： https://ci.nii.ac.jp/naid/130006407503
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A Novel Flux Switching Magnetic Gear for High Speed Motor System
Aiso Kohei, Akatsu Kan, Aoyama Yasuaki
IECON 2018 - 44TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY 337 - 342 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Lee Dongwoo, Akatsu Kan
IECON 2018 - 44TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY 397 - 402 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Minimization of torque ripple in an Inset type Magnet Reluctance Motor with square wave current
Ito Y., Akatsu K.
2018 XIII INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 1593 - 1597 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Research Trend of Electric Machines with Development of Finite Element Analysis
Hijikata Hiroki, Akatsu Kan
IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING 12 S171 - S176 2017.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Controlled Voltage Source Vector Control for Switched Reluctance Motors Using PWM Method
Nakao Noriya, Akatsu Kan
ELECTRICAL ENGINEERING IN JAPAN 198 ( 2 ) 27 - 38 2017.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Miyama Yoshihiro, Ishizuka Mitsuru, Kometani Haruyuki, Akatsu Kan
2017 IEEE INTERNATIONAL ELECTRIC MACHINES AND DRIVES CONFERENCE (IEMDC) 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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The Study on Transient Performance Improvement of Position Sensorless Control Algorithm for IPMSM
Lee Dongwoo, Akatsu Kan
2017 IEEE INTERNATIONAL SYMPOSIUM ON SENSORLESS CONTROL FOR ELECTRICAL DRIVES (SLED) 67 - 72 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Principle Verification of Magnetization Reversal Motor
Murakami Tatsuki, Akatsu Kan
2017 19TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'17 ECCE EUROPE) 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Reluctance Magnetic Gear and Flux Switching Magnetic Gear for High Speed Motor System
Aiso Kohei, Akatsu Kan, Aoyama Yasuaki
2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2445 - 2452 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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The Study on Gain Selecting Method of Position Sensorless Control Algorithm for IPMSM
Lee Dongwoo, Akatsu Kan
2017 IEEE 12TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS (PEDS) 728 - 733 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Electromagnetic Force Acquisition Distributed in Electric Motor to Reduce Vibration
Ito Toru, Akatsu Kan
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 53 ( 2 ) 1001 - 1008 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Thermal Dissipation Characteristics of Integrated In-wheel Motor Using SiC Power Module
Iizuka Shota, Akatsu Kan
2017 IEEE 3RD INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE AND ECCE ASIA (IFEEC 2017-ECCE ASIA) 1251 - 1255 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Uchida Kazuya, Akatsu Kan
2017 IEEE 3RD INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE AND ECCE ASIA (IFEEC 2017-ECCE ASIA) 633 - 637 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design 13.56MHz 10 kW resonant inverter using GaN HEMT for wireless power transfer systems
Nguyen Kien Trung, Akatsu Kan
2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 955 - 960 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Driver design for 3kW 13.56 MHz multiphase resonant inverter
Nguyen Kien Trung, Akatsu Kan
2017 IEEE 3RD INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE AND ECCE ASIA (IFEEC 2017-ECCE ASIA) 170 - 174 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Novel Magnetic Gear for High Speed Motor System
Aiso Kohei, Akatsu Kan, Aoyama Yasuaki
2017 IEEE INTERNATIONAL ELECTRIC MACHINES AND DRIVES CONFERENCE (IEMDC) 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Complex Vector form PI Control for Harmonic Current Control of a PMSM
Okajima Yudai, Akatsu Kan
IEEJ Transactions on Industry Applications 137 ( 3 ) 238 - 245 2017 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
<p>This paper proposes the harmonic current control of a permanent magnet synchronous machine using complex vector form PI controllers. The complex vector form PI controllers are designed based on voltage equations written in complex vector notation in multiple reference frames that synchronize with the harmonic current. Thus, a decoupling control in each reference frame can be achieved that has been difficult to realize in the past. The proposed method improves the transient response of the harmonic current control by realizing the decoupling control in each reference frame. Moreover, the proposed harmonic current control method can be designed and implemented easily because the PI gain design method for all harmonic orders is the traditional pole-zero cancellation method, which is well known. This paper presents the transient response and parameter sensitivity of the proposed harmonic current control that were obtained from the results of the simulation and experiment conducted, which reveal the effectiveness of the proposed method.</p>
Other Link： https://ci.nii.ac.jp/naid/130005398565
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Experimental Studies of Variable Leakage Flux Type IPMSM
Hijikata Hiroki, Akatsu Kan, Kato Takashi
IEEJ Transactions on Industry Applications 137 ( 9 ) 737 - 743 2017 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
<p>This study describes a Variable Leakage Flux type Interior Permanent Magnet synchronous motor (VLF-IPM) for an automobile traction motor. The proposed VLF-IPM can control the leakage flux in the rotor core depending on the armature reaction. As the motor can suppress <i>d</i>-axis current to reduce the back-EMF, the motor improves not only the motor efficiency but also the inverter efficiency in the high speed area. It is experimentally confirmed that the VLF-IPM can achieve the high efficiency driving in the wide speed range.</p>
Other Link： https://ci.nii.ac.jp/naid/130006038801
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Tanabe Ryo, Akatsu Kan
IEEJ Journal of Industry Applications 6 ( 3 ) 173 - 180 2017 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
<p>This study proposes advanced torque control of permanent magnet synchronous motors (PMSMs) using a finite element analysis (FEA) based motor model with a real-time simulator. This model can simulate the behavior of an actual motor including nonlinear characteristics such as spatial harmonics and magnet saturations. Therefore, model-based control with an FEA based motor model is advantageous for motor control. This study aims to achieve advanced motor control and drive techniques. In this study, high performance torque control techniques for PMSMs are proposed. The proposed torque control is developed based on direct torque control with torque prediction. This method can achieve fast response and smooth torque production. Its effectiveness is verified through simulations and experiments.</p>
Other Link： https://ci.nii.ac.jp/naid/130005632243
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Di Tullio Alessio, Tursini Marco, Parasiliti Francesco, Akatsu Kan
2017 20TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Wide Driving Range Realization by Multi-layer Multi-phase Motor for Electric Vehicle
Shoyama Takumi, Akatsu Kan
2017 20TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Variable Magnetization Machine in Electrified Vehicle Application
Fukushige Takashi, Kato Takashi, Akatsu Kan, Lorenz Robert D.
ELECTRICAL ENGINEERING IN JAPAN 197 ( 3 ) 67 - 75 2016.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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B-21-20 On the Method of Controlling Indirect Feeding Antenna against Environmental Variation
Ogata Takuya, Trung Nguyen Kien, Cuong Nguyen Tri, Akatsu Kan, Tanaka Shinichi
Proceedings of the IEICE General Conference 2016 ( 1 ) 2016.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electronics, Information and Communication Engineers Joint Work
Other Link： https://ci.nii.ac.jp/naid/110010037666
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Vector Control Specialized for Switched Reluctance Motor Drives
Nakao Noriya, Akatsu Kan
ELECTRICAL ENGINEERING IN JAPAN 194 ( 2 ) 24 - 36 2016.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Study of Switching Method for MATRIX Motor Realizing Variable Characteristic
Sakai Yuki, Hijikata Hiroki, Akatsu Kan, Miyama Yoshihiro, Arita Hideaki
2016 IEEE 8TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE (IPEMC-ECCE ASIA) 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Okajima Yudai, Akatsu Kan
PROCEEDINGS OF THE IECON 2016 - 42ND ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY 2815 - 2820 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Hijikata H., Sakai Y., Akatsu K., Miyama Y.
2016 XXII INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 1092 - 1097 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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leStudy of high-speed SRM with Amorphous steel sheet for EV
Ueta Kazuki, Akatsu Kan
2016 19TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2016) 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Operating Point Estimation for Permanent Magnet of Electric Motor under Load-condition
Yoneyama Katsuya, Akatsu Kan
2016 19TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2016) 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Akune R., Akatsu K., Fujihara M., Yamamoto T.
2016 XXII INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 578 - 584 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design of Switched Reluctance Motors for Electric Hand Tools
Mashiko H., Akatsu K.
2016 XXII INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 1572 - 1576 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Nguyen Kien Trung, Akatsu Kan
2016 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Sano Hiroyuki, Narita Katsuyuki, Zeze Eri, Yamada Takashi, Kazuki Ueta, Akatsu Kan
2016 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A new motor with stator magnet using the magnetization reversal technique
Yamada Y., Akatsu K.
2016 XXII INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 60 - 65 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Novel Reluctance Magnetic Gear for High Speed Motor
Aiso Kohei, Akatsu Kan
2016 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2016 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Tanabe Ryo, Akatsu Kan
IEEJ Journal of Industry Applications 5 ( 2 ) 167 - 173 2016 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
This paper presents advanced torque and current control techniques for Permanent Magnet Synchronous Motors (PMSMs) with a real-time simulator which has a nonlinear motor model. This model is called "Behavior motor model", and it is developed based on finite element analysis results considering non-linear characteristics that include spatial harmonics and magnetic saturation. The real-time simulator is implemented within a circuit simulator that couples the behavior motor model with switching circuits in real-time, and it can be applied to torque and current control as an advanced controller. In this paper, the torque and current control of a PMSM with the proposed system is presented. Effectiveness of this technique is verified by performing simulations and experiments.
Other Link： https://ci.nii.ac.jp/naid/130005133142
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Aiso Kohei, Akatsu Kan
IEEJ Transactions on Industry Applications 136 ( 9 ) 664 - 665 2016 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
<p>In this paper, a design of an axial type switched reluctance motor (SRM) is presented that considers the magnetic characteristics of soft magnetic composite (SMC) material. These characteristics are changed by the press and cutting processes for producing the motor core. It is shown that the magnetic characteristics of the vertical and the parallel flux direction differ according to the direction of the press, and are degraded by the cutting process. The proposed design method can be accurately simulated by using the magnetic characteristics in both the vertical and the parallel flux direction in an axial SRM motor.</p>
Other Link： https://ci.nii.ac.jp/naid/130005262353
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Making an Available HP for IEEJ IAS Members
Akatsu Kan
IEEJ Transactions on Industry Applications 136 ( 8 ) NL8_1 - NL8_1 2016 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Single Work
Other Link： https://ci.nii.ac.jp/naid/130005254741
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Hijikata Hiroki, Akatsu Kan, Miyama Yoshihiro, Arita Hideaki, Daikoku Akihiro
IEEJ Journal of Industry Applications 5 ( 2 ) 176 - 183 2016 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
Interior type permanent magnet synchronous motors (IPMSMs) have been widely used for various applications because of their high efficiency and high power density. It is well known that the flux weakening control of an IPMSM can extend the operating range by reducing the back-EMF and producing reluctance torque. An IPMSM, however, experiences a large harmonic iron loss in the stator teeth caused by the distorted flux density. In particular, the harmonic eddy current loss significantly increases in the high speed region under flux weakening control. This paper describes a novel motor-drive system that includes an individual multi-phase drive in order to control the current and voltage in each armature winding. The proposed system can be expected to achieve high efficiency driving, a wide operating range, fail-safety and so on. Furthermore, the proposed method gives the distorted flux density distribution a sinusoidal waveform, because the individual control can observe and regulate the instantaneous flux linkage in each stator tooth, although the motor consists of a full-pitch distributed winding. Therefore, the proposed drive can suppress the harmonic iron loss under the flux weakening operation. Simulation and experimental results show that the proposed method can achieve an extensive reduction in the total iron loss in particular in the high speed region.
Other Link： https://ci.nii.ac.jp/naid/130005133154
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C-15-11 Analysis of Three Dimensional Inverter Using Planar Circuit Electro-Magnetic Solver
Ogata Takuya, Nguyen Kien Trung, Akatsu Kan, Tanaka Shinichi
Proceedings of the IEICE General Conference 2015 ( 1 ) 2015.2 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electronics, Information and Communication Engineers Joint Work
Other Link： https://ci.nii.ac.jp/naid/110009926705
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Variable characteristics DC motor by changing brush lead angle to expand the operation range
Takura Daichi, Akatsu Kan
2015 9TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE-ECCE ASIA) 695 - 700 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Variable Characteristics Technique on Permanent Magnet Motor for Electric Vehicles Traction System
Miyama Yoshihiro, Hijikata Hiroki, Sakai Yuki, Akatsu Kan, Arita Hideaki, Daikoku Akihiro
2015 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC) 596 - 599 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Vibration Reduction Method in SRM with a Smoothing Voltage Commutation by PWM
Tanabe Akiko, Akatsu Kan
2015 9TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE-ECCE ASIA) 600 - 604 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Hijikata Hiroki, Sakai Yuki, Akatsu Kan, Miyama Yoshihiro, Arita Hideaki, Daikoku Akihiro
2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 6545 - 6551 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Ringing suppressing method in 13.56MHz resonant inverter for wireless power transfer systems
Nguyen Kien Trung, Akatsu Kan
2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2275 - 2281 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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High efficiency SRM drive using a Quasi-Current Source Inverter
Suzuki Yousuke, Akatsu Kan
2015 IEEE 2ND INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE (IFEEC) 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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High voltage driving method by using cluster inverters for SRM
Miyane K., Akatsu K.
2015 9TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE-ECCE ASIA) 1617 - 1622 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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High voltage driving method by using low voltage inverters for SRM
Miyane Kazuma, Akatsu Kan
2015 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC) 335 - 339 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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PCB design for 13.56MHz half-bridge class D inverter for wireless power transfer system
Nguyen Kien Trung, Ogata Takuya, Tanaka Shinichi, Akatsu Kan
2015 9TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE-ECCE ASIA) 1692 - 1699 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Electromagnetic Force Acquisition Distributed in Electric Motor to Reduce Vibration
Ito Toru, Akatsu Kan
2015 18TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 1329 - 1333 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Tanabe Ryo, Akatsu Kan
IECON 2015 - 41ST ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY 4430 - 4435 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Narita Katsuaki, Asanuma Tatsuya, Semba Kazuki, Sano Hiroyuki, Yamada Takashi, Aiso Kouhei, Akatsu … Show more authors
Narita Katsuaki, Asanuma Tatsuya, Semba Kazuki, Sano Hiroyuki, Yamada Takashi, Aiso Kouhei, Akatsu Kan Hide authors
2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 4413 - 4417 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Sato Masakazu, Trung Nguyen Kien, Akatsu Kan
2015 IEEE 2ND INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE (IFEEC) 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design Methodology for Variable Leakage Flux IPM for Automobile Traction Drives
Kato Takashi, Minowa Masanao, Hijikata Hiroki, Akatsu Kan, Lorenz Robert D.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 51 ( 5 ) 3811 - 3821 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design of Axial type Slot-less PMSM and Systems for Electric Wheelbarrow
Okada Keisuke, Akatsu Kan
2015 18TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 830 - 835 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Tanabe Ryo, Akatsu Kan
2015 17TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'15 ECCE-EUROPE) 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Fukushige Takashi, Limsuwan Natee, Kato Takashi, Akatsu Kan, Lorenz Robert D.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 51 ( 4 ) 2984 - 2989 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Novel Single Phase SRM Simply Driven by Commercial AC Power Supply
Aiso Kohei, Akatsu Kan
2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3878 - 3885 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Aiso Kohei, Akatsu Kan
2015 18TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 1817 - 1823 2015 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Electric Drive Technologies Contributing to Low-Fuel-Comsumption Vehicles
Mizutani Ryoji, Tachibana Takeshi, Morimoto Masayuki, Akatsu Kan, Hoshi Nobukazu
IEEJ Transactions on Industry Applications 135 ( 9 ) 884 - 891 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
CO<sub>2</sub> reduction is the biggest challenge in the world, and the vehicles play an important role. Regulations governing CO<sub>2</sub> emission reduction for vehicles will be tightened in the future. Automotive manufacturers design EVs, PHVs, HEVs, FCVs to meet CO<sub>2</sub> regulation. However, vehicles with the internal combustion engine will continue to retain a large market share in the near future. This report presents recent technology trends in fuel economy for electrical and conventional vehicles.
Other Link： https://ci.nii.ac.jp/naid/130005097091
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Variable Magnetization Machine in Electrified Vehicle Application
Fukushige Takashi, Kato Takashi, Akatsu Kan, Lorenz Robert D.
IEEJ Transactions on Industry Applications 135 ( 9 ) 922 - 928 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
This paper describes variable magnetization machines, which are capable of varying the magnetization state of permanent magnets during operation. A pulse current on the stator windings creates a magnetic field on the rotor; this can be used to manipulate the magnetization state of the rotor magnets. Regulating the magnetization state according to the machine operating condition can reduce machine losses. A proof-of-principle machine was designed and fabricated. A series of experiments was conducted to evaluate the torque-speed envelope and efficiency contours of the fabricated machine. A full-scale machine was then designed with a modified magnetic circuit for application to an electric vehicle and evaluated using finite element analysis. A control strategy for the magnetization state during machine operation is proposed, and the losses during a driving cycle with the strategy were evaluated.
Other Link： https://ci.nii.ac.jp/naid/130005097088
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Trung Nguyen Kien, Ogata Takuya, Tanaka Shinichi, Akatsu Kan
IEEJ Journal of Industry Applications 4 ( 6 ) 703 - 713 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
This paper presents the analysis and PCB design of a class D inverter for wireless power transfer systems operating at 13.56MHz. The effects of parasitic inductance on the switching performance of MOSFETs, transfer efficiency of WPT systems, and power loss are analyzed. At high frequencies, the print circuit board (PCB) design is very critical because it control the parasitic elements on the circuit. This study proposes an improved PCB design that can provide a 23.4% decrease in parasitic inductance over the conventional PCB design.
Other Link： https://ci.nii.ac.jp/naid/130005107050
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KAIMORI Hiroyuki, AKATSU Kan
The Journal of The Institute of Electrical Engineers of Japan 135 ( 2 ) 75 - 82 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
Other Link： https://ci.nii.ac.jp/naid/130004733064
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Proposal and Machine Characteristics of a Single-Phase SRM Driven by Commercial AC Power Supply
Aiso Kohei, Akatsu Kan
IEEJ Transactions on Industry Applications 135 ( 11 ) 1091 - 1099 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
This paper presents a novel single-phase switched reluctance motor (SRM) that can be directly driven by a commercial AC power supply without any switching circuit and sensor. This proposed SRM is optimized based on a simple design technique. The optimized machine has higher motor efficiency compared with conventional induction motors. In addition, the novel SRM can start-up with direct commercial AC power supply. In this paper, the performance of the prototype single-phase SRM is verified through simulations and experiments.
Other Link： https://ci.nii.ac.jp/naid/130005106444
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Controlled Voltage Source Vector Control for Switched Reluctance Motors Using PWM Method
Nakao Noriya, Akatsu Kan
IEEJ Transactions on Industry Applications 135 ( 10 ) 999 - 1008 2015 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
This paper proposes controlled voltage source (CVS) vector control for switched reluctance motors (SRMs) using the PWM method. This proposed technique can achieve high controllability for variable speed drives, low current ripple and low noise operation, and high motor efficiency at high speed. Moreover, its implementation is easy because the controller design does not require complicated offline data such as the magnetization characteristics. To verify the effectiveness, an experiment was conducted to compare the performances of the proposed technique and a conventional unipolar drive using the hysteresis comparator method.
Other Link： https://ci.nii.ac.jp/naid/130005101647
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Yu Chen-Yen, Fukushige Takashi, Athavale Apoorva, Gagas Brent, Akatsu Kan, Reigosa David, Lorenz Ro … Show more authors
Yu Chen-Yen, Fukushige Takashi, Athavale Apoorva, Gagas Brent, Akatsu Kan, Reigosa David, Lorenz Robert D. Hide authors
2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2495 - 2502 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Matsui Ryota, Nakao Noriya, Akatsu Kan
2014 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIROSHIMA 2014 - ECCE-ASIA) 1128 - 1134 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Minowa Masanao, Hijikata Hiroki, Akatsu Kan, Kato Takashi
2014 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIROSHIMA 2014 - ECCE-ASIA) 3828 - 3833 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Vector Control for Switched Reluctance Motor Drives Using an Improved Current Controller
Nakao Noriya, Akatsu Kan
2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 1379 - 1386 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Vector Control Specialized for Switched Reluctance Motor Drives
Nakao N., Akatsu K.
2014 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 943 - 949 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Hijikata Hiroki, Akatsu Kan, Miyama Yoshihiro, Arita Hideaki, Daikoku Akihiro
2014 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIROSHIMA 2014 - ECCE-ASIA) 2673 - 2678 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Hijikata H., Akatsu K., Miyama Y., Arita H., Daikoku A.
2014 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 551 - 557 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Rare Earth Reduction Using a Novel Variable Magnetomotive Force Flux-Intensified IPM Machine
Kato Takashi, Limsuwan Natee, Yu Chen-Yen, Akatsu Kan, Lorenz Robert D.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 50 ( 3 ) 1748 - 1756 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Single Phase SRM Driven by Commercial AC Power Supply
Aiso Kohei, Nakao Noriya, Akatsu Kan
2014 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIROSHIMA 2014 - ECCE-ASIA) 1141 - 1147 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Sakaue Takahiro, Akatsu Kan
2014 17TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 3131 - 3135 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Study on High Frequency Inverter With 100kHz Current Feedback Control by Using FPGA
Amano Shunsuke, Akatsu Kan
2014 17TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 3392 - 3397 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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SUPPRESSING PULSATING TORQUES Torque ripple control for synchronous motors
Nakao Noriya, Akatsu Kan
IEEE INDUSTRY APPLICATIONS MAGAZINE 20 ( 6 ) 33 - 44 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design Methodology for Variable Leakage Flux IPM for Automobile Traction Drives
Kato Takashi, Hijikata Hiroki, Minowa Masanao, Akatsu Kan, Lorenz Robert D.
2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3548 - 3555 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Tanabe Ryo, Akatsu Kan
2014 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIROSHIMA 2014 - ECCE-ASIA) 1234 - 1241 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Kaimori H., Nakao N., Sakaue T., Akatsu K.
2014 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 2695 - 2701 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design and Evaluation of a Variable-Flux Flux-Intensifying Interior Permanent-Magnet Machine
Limsuwan Natee, Kato Takashi, Akatsu Kan, Lorenz Robert D.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 50 ( 2 ) 1015 - 1024 2014 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Vector Control Specialized for Switched Reluctance Motor Drives
Nakao Noriya, Akatsu Kan
IEEJ Transactions on Industry Applications 134 ( 12 ) 1006 - 1015 2014 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
This paper proposes vector control specialized for a switched reluctance motor (SRM) drive. Because it is a unipolar drive, a sinusoidal current with a DC offset is applied to each circuit instead of the conventional trapezoidal current. The current consists of DC and AC components which can be identified by their generation of a (virtual) rotor flux and rotating stator magnetic field, respectively. Thus, the vector control system can be developed in the same way as conventional AC machines. The proposed technique provides new mathematical models of SRMs on a rotating reference frame and achieves precise and fast torque response and advanced operations such as linear torque-current control and maximum torque per ampere control. The vector control theory was verified through simulations and experiments.
Other Link： https://ci.nii.ac.jp/naid/130004713054
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A Study of Dual Winding Method for Compound Magnetomotive Force Motor
HIJIKATA Hiroki, SHIGETA Tomoaki, KARIYA Nobutaka, AKATSU Kan, KATO Takashi
IEEJ Transactions on Industry Applications 133 ( 10 ) 986 - 994 2013.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
This paper describes some characteristics of a compound magnetomotive forces (CMMF) motor employing a dual winding (DW) method. The CMMF motor can utilize three kinds of characteristics because of a special magnet arrangement. A 4-12 pole CMMF motor with changeable electric and magnetic characteristics had already been proposed in the previous study. The CMMF motor, however, has a problem in its driving range because of voltage interference. In this study, the DW method is proposed to solve this problem by utilizing magnet pole combinations and the winding distribution. This paper shows that the proposed motor can achieve multiple high-efficiency points by utilizing the parameter distribution for two kinds of magnet characteristics.
Other Link： https://ci.nii.ac.jp/naid/10031200996
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The evaluation of the joule loss and the hysteresis loss in the laminated core of SR motor
NARITA Katsuyuki, ASANUMA Tatsuya, SEMBA Kazuki, YAMADA Takashi, AKATSU Kan
2013 ( 75 ) 39 - 44 2013.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031200918
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A Study on Improvement in Permanent Magnet Synchronous Motor with High Permeability Magnet
MIYAMASU Masataka, NAKAMURA Yudai, AKATSU Kan, MASUZAWA Masahiro
IEEJ Transactions on Industry Applications 133 ( 9 ) 943 - 951 2013.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
This paper describes permanent magnet synchronous motors by having the characteristics of a bonded magnet. In general, most PMSMs use a Nd-Fe-B sintered magnet. Because the Nd-Fe-B sintered magnet has a high magnetic energy, it is possible to obtain high torque and high output power. On the other hand, the magnetic energy of the bonded magnet is lower than that of the Nd-Fe-B sintered magnet. However, this magnet has a higher permeability than the Nd-Fe-B sintered magnet and the eddy current is negligible. It is found that flux weakening control is useful because of the high permeability. This paper presents experimental results that verify the usability of the bonded magnet machines.
Other Link： https://ci.nii.ac.jp/naid/10031193740
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Proposal of Behavior Modeling of Permanent Magnet Synchronous Motors Using Magnetic Flux Linkages
KAIMORI Hiroyuki, AKATSU Kan
2013 ( 35 ) 13 - 18 2013.7 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031193639
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Narita Katsuyuki, Yamada Takashi, Sakashita Yoshiyuki, Akatsu Kan
ELECTRICAL ENGINEERING IN JAPAN 183 ( 3 ) 9 - 16 2013.5 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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High efficiency SRM Drive Method with a Current Source inverter
NAGAI Takanori, AKATSU Kan
2013 ( 15 ) 37 - 42 2013.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031161219
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A Study of High Torque PMSM by Square Current Excitation
MIYAMASU Masataka, AKATSU Kan
2013 ( 15 ) 25 - 30 2013.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031161217
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Improvement of fuel consumption for a large HEV
YABE Takuya, AKATSU Kan
2013 ( 15 ) 61 - 66 2013.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031161223
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Electromagnetic Field Analysis of IEEJ Benchmark IPM Motor with Concentrated Windings
KAIMORI Hiroyuki, KAWASE Yoshihiro, YAMAGIWA Akio, HIGUCHI Dai, TAKAHASHI Yasuhito, AKATSU Kan, YAM … Show more authors
KAIMORI Hiroyuki, KAWASE Yoshihiro, YAMAGIWA Akio, HIGUCHI Dai, TAKAHASHI Yasuhito, AKATSU Kan, YAMADA Takashi, NISHITA Seiji, YAMAZAKI Katsumi, TAKAHASHI Norio Hide authors
2013 ( 15 ) 69 - 74 2013.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031142212
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YAMAZAKI Katsumi, FUKUOKA Takashi, AKATSU Kan, NAKAO Noriya
2013 ( 15 ) 57 - 62 2013.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031142210
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Torque Ripple Suppression of Permanent Magnet Synchronous Motors Considering Total Loss Reduction
Nakao Noriya, Akatsu Kan
2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3880 - 3887 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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High Efficiency SRM drive using a Current Source Inverter
Takahashi Tomohiro, Nagai Takanori, Akatsu Kan
2013 1ST INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE (IFEEC 2013) 223 - 228 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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High Power Transformer and Motor Drive System Design for an Electric Helicopter
Kawakami Naoya, Akatsu Kan
2013 IEEE ECCE ASIA DOWNUNDER (ECCE ASIA) 1065 - 1070 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Integrated DC-DC Chopper Using Energy Harvesting
Takahashi Tomohiro, Akatsu Kan
2013 IEEE ECCE ASIA DOWNUNDER (ECCE ASIA) 941 - 947 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Motor control methods with a behavior model based on FEA results
Usui Makoto, Nakao Noriya, Akatsu Kan
2013 IEEE 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS (IEEE PEDS 2013) 445 - 450 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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New Trend of Motor Technology for Automobiles - Introduction and Overview -
Akatsu Kan, Matsui Nobuyuki
2013 IEEE ECCE ASIA DOWNUNDER (ECCE ASIA) 130 - 134 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Recent Related Technologies for EV/HEV Applications in JAPAN
Akatsu Kan, Watanabe Naoki, Fujitsuna Masami, Doki Shinji, Fujimoto Hiroshi
2013 IEEE ECCE ASIA DOWNUNDER (ECCE ASIA) 141 - 146 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Secondary Resistive Losses With High-Frequency Injection-Based Self-Sensing in IPM Machines
Limsuwan Natee, Kato Takashi, Yu Chen-Yen, Tamura Jun, Diaz Reigosa David, Akatsu Kan, Lorenz Rober … Show more authors
Limsuwan Natee, Kato Takashi, Yu Chen-Yen, Tamura Jun, Diaz Reigosa David, Akatsu Kan, Lorenz Robert D. Hide authors
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 49 ( 4 ) 1499 - 1507 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Suggested Design Space in a PMSM Parameter Plane for Variable Flux Machines
Gagas Brent, Fukushige Takashi, Limsuwan Natee, Yu Chen-Yen, Akatsu Kan, Lorenz Robert D.
2013 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC) 549 - 556 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Fukushige Takashi, Limsuwan Natee, Kato Takashi, Akatsu Kan, Lorenz Robert D.
2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 591 - 597 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Basic Properties of an Axial-Type Switched Reluctance Motor
Arihara Hiromu, Akatsu Kan
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 49 ( 1 ) 59 - 65 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Characteristics of a Switched Reluctance Motor using Grain-Oriented Electric Steel Sheet
Sugawara Yutaro, Akatsu Kan
2013 IEEE ECCE ASIA DOWNUNDER (ECCE ASIA) 1105 - 1110 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Characteristics of a Switched Reluctance Motor using Grain-Oriented Electric Steel Sheet
Sugawara Yutaro, Akatsu Kan
2013 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) 18 - 23 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Current Optimization Strategy for Surface Permanent Magnet Synchronous Motor Drives Based on a Rigorous Mathematical Model
Nakao Noriya, Akatsu Kan
2013 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC) 1188 - 1195 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Limsuwan Natee, Fukushige Takashi, Akatsu Kan, Lorenz Robert D.
2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 1547 - 1554 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Simple Unipolar Excitation Strategy for Switched Reluctance Motors by Using PWM Current Control
Nakao Noriya, Akatsu Kan
2013 IEEE ECCE ASIA DOWNUNDER (ECCE ASIA) 1111 - 1117 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A Principle of Next Generation Spintronics Motor
Furukawa Saori, Akatsu Kan
2013 IEEE ECCE ASIA DOWNUNDER (ECCE ASIA) 1355 - 1360 2013 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Miyamasu Masataka, Akatsu Kan
IEEJ Journal of Industry Applications 2 ( 1 ) 79 - 86 2013 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
This paper describes an approach to achieve a high efficiency drive such a brushless AC (BLAC) drive by a Brushless DC (BLDC) drive. BLDC motors with an excited rectangular voltage for 120 electrical degrees per cycle are commonly used for low-cost applications of permanent magnet synchronous motors (PMSMs). This drive method yields low-order harmonic components in the current waveform. These harmonic components cause mechanical vibration and electrical losses. Therefore, a BLDC drive is not applicable to a sinusoidal back-EMF machine. However, with regard to the high-frequency loss caused by a pulse width modulation (PWM) carrier and a switching loss, the BLDC drive has the potential to achieve higher efficiency than the BLAC drive. This paper compares the overall efficiency, which includes the PWM carrier frequency loss, by using a coupling analysis between a finite element analysis (FEA) and a circuit simulator. Two surface-mounted PMSMs (SPMSMs) are tested. One has a sinusoidal back-EMF waveform (BLAC machine), and the other has a trapezoidal back-EMF waveform (BLDC machine). Both the driving methods of the BLDC drive and the BLAC drive are adapted to each machine and their efficiencies are compared by both simulations and experiments. The results show that the BLDC machine with a BLDC drive has higher efficiency than the BLAC machine with a BLAC drive.
Other Link： https://ci.nii.ac.jp/naid/130003379497
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Hijikata Hiroki, Akatsu Kan
IEEJ Journal of Industry Applications 2 ( 6 ) 283 - 291 2013 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
Permanent magnet synchronous motors (PMSMs) have been used in high-performance applications owing to their high efficiency and high power density. In particular, an integrated system of a PMSM and power electronics equipment is attractive for high power density applications because the integrated system is lighter and smaller than the conventional separated system.<br>In this paper, the concept of a new integrated machine named the MATRIX motor is proposed. This motor consists of not only an integrated inverter but also, multi-layer windings and additional switches. These winding connections can be changed arbitrarily on the basis of a matrix. Through winding configurations, variable parameters such as turn number and winding factor can be determined, and the connection method can be changed between series and parallel arrangements. These variable parameters can change motor characteristics such as the maximum output torque, base speed, and operating region.<br>This paper describes the characteristics of a prototype model of the MATRIX motor. The characteristics of the winding rearrangement and its variable machine parameters are analyzed and verified through experiments. In addition, the online winding reconfiguration method is proposed and experimentally verified.
Other Link： https://ci.nii.ac.jp/naid/130003388493
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A Design of High Frequency High Power Transformer
KAWAKAMI Naoya, AKATSU Kan
2012 ( 169 ) 19 - 24 2012.12 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031142250
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A Design of High Frequency High Power Transformer
KAWAKAMI Naoya, AKATSU Kan
2012 ( 20 ) 19 - 24 2012.12 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031142310
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A study of an Automatic Design Method Considering an Overall Efficiency of a PMSM
YAMADA Tomohiro, YABE Takuya, AKATSU Kan
2012 ( 20 ) 25 - 30 2012.12 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031142311
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A study of an Automatic Design Method Considering an Overall Efficiency of a PMSM
YAMADA Tomohiro, YABE Takuya, AKATSU Kan
2012 ( 169 ) 25 - 30 2012.12 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031142251
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Yamazaki Katsumi, Fukuoka Takashi, Akatsu Kan, Nakao Noriya, Ruderman Alex
IEEE TRANSACTIONS ON MAGNETICS 48 ( 11 ) 3327 - 3330 2012.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Harmonic Torque Calculation of IPMSMs Using Electromagnetic Analysis
KAIMORI Hiroyuki, MIYAMASU Masataka, AKATSU Kan
2012 ( 114 ) 113 - 118 2012.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119595
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Harmonic Torque Calculation of IPMSMs Using Electromagnetic Analysis
KAIMORI Hiroyuki, MIYAMASU Masataka, AKATSU Kan
2012 ( 99 ) 113 - 118 2012.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119708
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SAKASHITA Yoshiyuki, HATTORI Tetsuya, YAMADA Takashi, IDE Hiroto, OTA Ryohei, ZEZE Eri, AKATSU Kan
2012 ( 114 ) 69 - 75 2012.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119701
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Title A study of Dual Winding Method for Compound Magnet Motive Forces Motor
SHIGETA Tomoaki, AKATSU Kan, KATO Takashi
2012 ( 5 ) 25 - 30 2012.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10030331814
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Torque Control of a Switched Reluctance Motor Using a Novel Torque Estimation Method
NAKAO Noriya, AKATSU Kan
2012 ( 5 ) 7 - 12 2012.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10030331782
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The Design Improvement of Axial Flux Type Switched Reluctance Motor
ARIHARA Hiromu, AKATSU Kan
2012 ( 5 ) 73 - 78 2012.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10030331892
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Winding Reconfiguration Method of MATRIX Motor under Driving Condition
HIJIKATA Hiroki, AKATSU Kan
2012 ( 5 ) 37 - 42 2012.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10030331832
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SAKASHITA Yoshiyuki, HATTORI Tetsuya, YAMADA Takashi, OTA Ryohei, ZEZE Eri, AKATSU Kan
2012 ( 23 ) 111 - 116 2012.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10030331206
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Nakao Noriya, Akatsu Kan
2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 4314 - 4321 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Rare Earth Reduction Using A Novel Variable Magnetomotive Force, Flux Intensified IPM Machine
Kato Takashi, Limsuwan Natee, Yu ChenYen, Akatsu Kan, Lorenz Robert D.
2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 4346 - 4353 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Research on Vibration Analysis and Noise-Reduction Technique of PM Motor
Zeze Eri, Akatsu Kan
2012 XXTH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM) 458 - 463 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Nakao N., Akatsu K.
2012 15TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2012) 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Experimental Verification on Dual Winding Method for Compound Magnet Motive Forces Motor
Hijikata Hiroki, Shigeta Tomoaki, Akatsu Kan, Kato Takashi
2012 IEEE INTERNATIONAL CONFERENCE ON POWER AND ENERGY (PECON) 904 - 909 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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An Approach to Generate High Reluctance Torque in an Inset-type PMSM by Square Current Excitation
Miyamasu Masataka, Akatsu Kan
2012 IEEE INTERNATIONAL CONFERENCE ON POWER AND ENERGY (PECON) 440 - 445 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Automatic Design Method Considering the Frequently Used Area of a PMSM for an HEV
Yamada Tomohiro, Akatsu Kan
2012 15TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2012) 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design and Evaluation of a Variable-Flux Flux-Intensifying Interior Permanent Magnet Machine
Limsuwan Natee, Kato Takashi, Akatsu Kan, Lorenz Robert D.
2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3670 - 3677 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Design and Online Winding Reconfigurations Method of MATRIX Motor
Hijikata Hiroki, Akatsu Kan
2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 1330 - 1337 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Miyamasu M., Akatsu K.
2012 15TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2012) 2012 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Shimomura S., Akatsu K., Saito D., Saito M., Hasegawa T., Fujita G.
Proceedings of Annual Conference of Japanese Society for Engineering Education 2012 ( 0 ) 242 - 243 2012 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Engineering Education Joint Work
Other Link： https://ci.nii.ac.jp/naid/110009620152
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IEEJ Transactions on Industry Applications 132 ( 1 ) 2012 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Single Work
Other Link： https://ci.nii.ac.jp/naid/130001900477
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NARITA Katsuyuki, YAMADA Takashi, SAKASHITA Yoshiyuki, AKATSU Kan
IEEJ Transactions on Industry Applications 131 ( 11 ) 1309 - 1315 2011.11 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
The high-flux permanent magnet and flux-barrier structure of permanent magnet synchronous machine (PMSM) has strong magnetic saturation and harmonics components. When control algorithms for such machines are examined by performing control simulation, the use of the conventional motor model based on the voltage equation can cause problems. To avoid these problems, we introduce the technique of coupled analysis of the magnetic-field-control/circuit simulation. Further, iron losses generated in PMSM can be estimated by the coupled analysis system. The iron losses at various driving conditions are calculated by the coupled analysis system and are compared with measured losses. The comparison results show that the coupled analysis system is suitable for accurately estimating the iron losses of PMSM.
Other Link： https://ci.nii.ac.jp/naid/10030531356
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Motor control innovation by coupling F/B control and on-line FEA results
USUI Makoto, AKATSU Kan
2011 ( 125 ) 43 - 48 2011.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10029801849
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MIYAMASU Masataka, AKATSU Kan
2011 ( 125 ) 37 - 42 2011.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10029801836
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Torque Ripple Control Based on Instantaneous Torque Estimation in PMSMs
NAKAO Noriya, AKATSU Kan
IEEJ Transactions on Industry Applications 131 ( 9 ) 1120 - 1127 2011.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
This study presents a new method for torque ripple control in permanent magnet synchronous motors (PMSMs). The proposed method is based on instantaneous torque estimation with a mathematical model. The model provides a new expression for the torque and requires a small amount of off-line data and the values of some machine parameters. With the new mathematical model, torque ripple control is possible at low cost with existing platforms. In the proposed method, the torque ripple is suppressed by feedforward (FF) control and feedback (FB) control. The FF control can compensate for drawbacks in the FB control based on the new model. Therefore, the proposed method for torque ripple control is effective under various conditions. In this paper, the proposed method is evaluated by performing both simulations and experiments.
Other Link： https://ci.nii.ac.jp/naid/10030530984
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Electromagnetic field analysis of IEEJ benchmark motor : iron loss evaluation of IPM and Syn.RM
FUJITA Masafumi, MIYAGI Daisuke, AKATSU Kan, FUJIOKA Takushi, OHGUCHI Hideki, YAMAZAKI Katsumi, KAW … Show more authors
FUJITA Masafumi, MIYAGI Daisuke, AKATSU Kan, FUJIOKA Takushi, OHGUCHI Hideki, YAMAZAKI Katsumi, KAWASE Yoshihiro, TAKAHASHI Norio, ISHIHARA Yoshiyuki Hide authors
2011 ( 63 ) 59 - 64 2011.8 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10029503105
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Electromagnetic field analysis of IEEJ benchmark motor : iron loss evaluation of IPM and Syn.RM
FUJITA Masafumi, MIYAGI Daisuke, AKATSU Kan, FUJIOKA Takushi, OHGUCHI Hideki, YAMAZAKI Katsumi, KAW … Show more authors
FUJITA Masafumi, MIYAGI Daisuke, AKATSU Kan, FUJIOKA Takushi, OHGUCHI Hideki, YAMAZAKI Katsumi, KAWASE Yoshihiro, TAKAHASHI Norio, ISHIHARA Yoshiyuki Hide authors
2011 ( 76 ) 59 - 64 2011.8 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031129505
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The Design Method to Minimize Torque Ripple in IPMSM with Concentrated Winding
KIJIMA Ryukichi, NAKAMURA Yudai, SHIMOMURA Shoji, AKATSU Kan
2011 ( 39 ) 1 - 6 2011.8 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031129148
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The Design Method to Minimize Torque Ripple in IPMSM with Concentrated Winding
KIJIMA Ryukichi, NAKAMURA Yudai, SHIMOMURA Shoji, AKATSU Kan
2011 ( 43 ) 1 - 6 2011.8 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10029502663
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Design Theory of a Variable Characteristic Motor Using Compound Magnetomotive Forces
Kato Takashi, Akatsu Kan, Shigeta Tomoaki, NAKANO Masaki, TSUKAMOTO Masahiro, ARIMITSU Minoru
電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society 131 ( 8 ) 1049 - 1058 2011.8 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人 電気学会 Joint Work
The permanent magnet synchronous motor offers the possibility of obtaining higher efficiency in a smaller motor size. However, it is difficult to vary the range of high motor efficiency because of its constant magnetomotive force (MMF) level. This paper proposes a variable characteristic motor that embodies a new concept of the compound magnetomotive forces (CMMF) motor. The motor uses a special magnet arrangement that has the MMF of components with different number of pole pairs. The application of compound current control to this motor makes it possible to vary the motor speed and torque (N-T) characteristics. This paper describes the derivation of the theoretical equations for this CMMF motor. It also presents the results of FEA and experiments conducted with the prototype motor to demonstrate the validity of the CMMF concept.
Other Link： https://ci.nii.ac.jp/naid/10030530829
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A Property Measurement of A Designed Axial Type Switched Reluctance Motors
ARIHARA Hiromu, AKATSU Kan
Journal of the Japan Society of Applied Electromagnetics and Mechanics 19 ( 2 ) 298 - 305 2011.6 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/110008673744
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Slot-pole combination analysis and IPM application of compound magnet motive forces motor
SHIGETA Tomoaki, AKATSU Kan, KATO Takashi
The Papers of Technical Meeting on Vehicle Technology, IEE Japan 2011 ( 14 ) 13 - 18 2011.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10027979273
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Characteristics of Axial type Switched Reluctance Motor
ARIHARA Hiromu, AKATSU Kan
The Papers of Technical Meeting on Vehicle Technology, IEE Japan 2011 ( 14 ) 1 - 6 2011.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10027979257
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Finite Element Analysis of Electromagnetic Fields for the Motor Design and Its Application
AKATSU Kan
Journal of the Japan Society for Simulation Technology 29 ( 4 ) 38 - 42 2011.2 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Single Work
Other Link： https://ci.nii.ac.jp/naid/110008440858
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Electromagnetic field analysis of IEEJ benchmark motor : characteristic evaluation of IPM motor
FUJITA Masafumi, MIYAGI Daisuke, AKATSU Kan, FUJIOKA Takushi, OHGUCHI Hideki, YAMAZAKI Katsumi, KAW … Show more authors
FUJITA Masafumi, MIYAGI Daisuke, AKATSU Kan, FUJIOKA Takushi, OHGUCHI Hideki, YAMAZAKI Katsumi, KAWASE Yoshihiro, TAKAHASHI Norio, ISHIHARA Yoshiyuki Hide authors
2011 ( 14 ) 73 - 78 2011.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10027802051
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Electromagnetic field analysis of IEEJ benchmark motor : characteristic evaluation of IPM motor
FUJITA Masafumi, MIYAGI Daisuke, AKATSU Kan, FUJIOKA Takushi, OHGUCHI Hideki, YAMAZAKI Katsumi, KAW … Show more authors
FUJITA Masafumi, MIYAGI Daisuke, AKATSU Kan, FUJIOKA Takushi, OHGUCHI Hideki, YAMAZAKI Katsumi, KAWASE Yoshihiro, TAKAHASHI Norio, ISHIHARA Yoshiyuki Hide authors
2011 ( 14 ) 73 - 78 2011.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119529
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Torque Ripple Control for Synchronous Motors Using Instantaneous Torque Estimation
Nakao Noriya, Akatsu Kan
2011 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2452 - 2459 2011 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Secondary Resistive Losses with High-frequency Injection-based Self-sensing in IPM Machines
Limsuwan Natee, Kato Takashi, Yu Chen-Yen, Tamura Jun, Reigosa David, Akatsu Kan, Lorenz Robert D.
2011 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 622 - 629 2011 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Miyamasu Masataka, Akatsu Kan
IECON 2011: 37TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY 1830 - 1835 2011 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Characteristics of Axial type Switched Reluctance Motor
Arihara Hirom, Akatsu Kan
2011 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3582 - 3589 2011 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Hijikata Hiroki, Akatsu Kan
2011 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3285 - 3290 2011 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Apply of high accuracy motor model to control simulation
NARITA Katsuyuki, YAMADA Takashi, SAKASHITA Yoshiyuki, AKATSU Kan, FUJII Yasuo, OZAKI Yoshihiko
2010 ( 69 ) 17 - 22 2010.5 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119806
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Apply of high accuracy motor model to control simulation
NARITA Katsuyuki, YAMADA Takashi, SAKASHITA Yoshiyuki, AKATSU Kan, FUJII Yasuo, OZAKI Yoshihiko
2010 ( 56 ) 17 - 22 2010.5 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10026376878
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NARITA Katsuyuki, YAMADA Takashi, SAKASHITA Yoshiyuki, AKATSU Kan
2010 ( 26 ) 95 - 100 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10026076529
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Measurement of Iron Loss of Non-oriented Electrical Steel Sheet under PWM Inverter Excitation
OTOME Daizaburo, OZEKI Yuki, MIYAGI Daisuke, NAKANO Masanori, TAKAHASHI Norio, AKATSU Kan, SHIOZAKI … Show more authors
OTOME Daizaburo, OZEKI Yuki, MIYAGI Daisuke, NAKANO Masanori, TAKAHASHI Norio, AKATSU Kan, SHIOZAKI Akira, KAWABE Morio Hide authors
2010 ( 26 ) 37 - 42 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10026076461
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Modeling Method of Vibration Analysis Model for Permanent Magnet Motor
HATTORI Tetsuya, NARITA Katsuyuki, SAKASHITA Yoshiyuki, YAMADA Takashi, HANAOKA Kiyotaka, AKATSU Kan
2010 ( 26 ) 61 - 66 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10026076488
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NARITA Katsuyuki, YAMADA Takashi, SAKASHITA Yoshiyuki, AKATSU Kan
2010 ( 26 ) 95 - 100 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119638
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Measurement of Iron Loss of Non-oriented Electrical Steel Sheet under PWM Inverter Excitation
OTOME Daizaburo, OZEKI Yuki, MIYAGI Daisuke, NAKANO Masanori, TAKAHASHI Norio, AKATSU Kan, SHIOZAKI … Show more authors
OTOME Daizaburo, OZEKI Yuki, MIYAGI Daisuke, NAKANO Masanori, TAKAHASHI Norio, AKATSU Kan, SHIOZAKI Akira, KAWABE Morio Hide authors
2010 ( 26 ) 37 - 42 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119457
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Measurement of Iron Loss of Non-oriented Electrical Steel Sheet under PWM Inverter Excitation
OTOME Daizaburo, OZEKI Yuki, MIYAGI Daisuke, NAKANO Masanori, TAKAHASHI Norio, AKATSU Kan, SHIOZAKI … Show more authors
OTOME Daizaburo, OZEKI Yuki, MIYAGI Daisuke, NAKANO Masanori, TAKAHASHI Norio, AKATSU Kan, SHIOZAKI Akira, KAWABE Morio Hide authors
2010 ( 26 ) 37 - 42 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119628
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Modeling Method of Vibration Analysis Model for Permanent Magnet Motor
HATTORI Tetsuya, NARITA Katsuyuki, SAKASHITA Yoshiyuki, YAMADA Takashi, HANAOKA Kiyotaka, AKATSU Kan
2010 ( 26 ) 61 - 66 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119461
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Modeling Method of Vibration Analysis Model for Permanent Magnet Motor
HATTORI Tetsuya, NARITA Katsuyuki, SAKASHITA Yoshiyuki, YAMADA Takashi, HANAOKA Kiyotaka, AKATSU Kan
2010 ( 26 ) 61 - 66 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119632
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NARITA Katsuyuki, YAMADA Takashi, SAKASHITA Yoshiyuki, AKATSU Kan
2010 ( 26 ) 95 - 100 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10031119467
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Diaz Reigosa David, Akatsu Kan, Limsuwan Natee, Shibukawa Yuichi, Lorenz Robert D.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 46 ( 6 ) 2467 - 2474 2010 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Akatsu Kan, Narita Katsuyuki, Sakashita Yoshiyuki, Yamada Takashi
Transactions of Society of Automotive Engineers of Japan 41 ( 2 ) 469 - 475 2010 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Society of Automotive Engineers of Japan Joint Work
Output characteristics are compared between IPMSM and SPMSM under the high flux density conditions. Output torque, power and efficiency are compared including the experimental and the analysis results. Iron loss estimation method is also described and compared with the experimental results.
Other Link： https://ci.nii.ac.jp/naid/130004515483
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New Concept Motor that Uses Compound Magnet Motive Forces For EV Application
Shigeta Tomoaki, Akatsu Kan, Katou Takashi
2010 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION 2963 - 2970 2010 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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IGARASHI Ryo, KAWAMURA Atsuo, AKATSU Kan
2009 ( 21 ) 49 - 53 2009.3 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10026068116
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Reigosa David, Akatsu Kan, Limsuwan Natee, Shibukawa Yuichi, Lorenz Robert D.
2009 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION, VOLS 1-6 3679 - + 2009 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Impact of Flux Weakening Current to the Iron Loss in an IPMSM Including PWM Carrier Effect
Akatsu Kan, Narita Katsuyuki, Sakashita Yoshiyuki, Yamada Takashi
2009 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION, VOLS 1-6 1854 - + 2009 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Narita Katsuyuki, Sakashita Yoshiyuki, Yamada Takashi, Akatsu Kan
2009 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, VOLS 1-3 23 - + 2009 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Modeling method of Vibration Analysis Model for Permanent Magnet Motor Using Finite Element Analysis
Hattori Tetsuya, Narita Katsuyuki, Yamada Takashi, Sakashita Yoshiyuki, Hanaoka Kiyotaka, Akatsu Kan
2009 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, VOLS 1-3 65 - + 2009 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Comparing Coupled Analysis With Experimental Results for an Interior PM Machine
Akatsu Kan, Lorenz Robert D.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 45 ( 1 ) 178 - 185 2009 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Narita Katsuyuki, Sakashita Yoshiyuki, Yamada Takashi, Akatsu Kan
Transactions of Society of Automotive Engineers of Japan 40 ( 6 ) 1569 - 1574 2009 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Society of Automotive Engineers of Japan Joint Work
We propose the control/circuit simulation system using motor model with magnetid saturation characterisitcs and harmonics created by electromagnetic filed simulator. That motor model has the inductance, magnetic flux and torque information of each motor which include the spatial harmonic components and effect by magnetic saturation. And we made the Interior Permanent Magnet Synchronous Motor(IPMSM) for estimation of that motor model and compared current, voltage, iron loss results given by the simulation with the experimented values.
Other Link： https://ci.nii.ac.jp/naid/130004515427
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Enrichment and characterization of chlorinated organophosphate ester-degrading mixed bacterial cultures
Takahashi Shouji, Kawashima Koji, Kawasaki Manami, Kamito Jun, Endo Yusuke, Akatsu Kumiko, Horino S … Show more authors
Takahashi Shouji, Kawashima Koji, Kawasaki Manami, Kamito Jun, Endo Yusuke, Akatsu Kumiko, Horino Sadatoshi, Yamada Ryo-hei, Kera Yoshio Hide authors
JOURNAL OF BIOSCIENCE AND BIOENGINEERING 106 ( 1 ) 27 - 32 2008.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Multi-Beam Optical Scanning System with 20-channel Edge-emitting Laser Diode Array for Production Printing Applications
Shibayama Yasuyuki, Akatsu Kazuhiro, Mochizuki Takeshi, Sakamoto Junshin
NIP24/DIGITAL FABRICATION 2008: 24TH INTERNATIONAL CONFERENCE ON DIGITAL PRINTING TECHNOLOGIES, TECHNICAL PROGRAM AND PROCEEDINGS 212 - 215 2008 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Iron Loss Calculation of PM Motor by Coupling Analysis between Magnetic Field Simulator and Control Simulator
Narita Katsuyuki, Yamada Takashi, Sakashita Yoshiyuki, Akatsu Kan
ICEMS 2008: PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, VOLS 1- 8 3301 - 3306 2008 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Four-beam scanning optical system with a converting function of seven-level print dot density
Mochizuki Takeshi, Shibayama Yasuyuki, Akatsu Kazuhiro, Sakamoto Junshin, Hashimoto Yasushi, Kataok … Show more authors
Mochizuki Takeshi, Shibayama Yasuyuki, Akatsu Kazuhiro, Sakamoto Junshin, Hashimoto Yasushi, Kataoka Keiji Hide authors
JOURNAL OF IMAGING SCIENCE AND TECHNOLOGY 52 ( 2 ) 2008 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Characteristics comparison between SPMSM and IPMSM under high flux density condition by both experimental and analysis results
Akatsu Kan, Narita Katsuyuki, Sakashita Yoshiyuki, Yamada Takashi
ICEMS 2008: PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, VOLS 1- 8 2848 - + 2008 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Characterization of CD8(+) leukocytes in fugu (Takifugu rubripes) with antiserum against fugu CD8 alpha
Araki Kyosuke, Akatsu Kanako, Suetake Hiroaki, Kikuchi Kiyoshi, Suzuki Yuzuru
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 32 ( 7 ) 850 - 858 2008 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Genomic organization and expression of CD8 alpha and CD8 beta genes in fugu Takifugu rubripes
Suetake Hiroaki, Araki Kyosuke, Akatsu Kanako, Somamoto Tomonori, Dijkstra Johannes Martinus, Yoshi … Show more authors
Suetake Hiroaki, Araki Kyosuke, Akatsu Kanako, Somamoto Tomonori, Dijkstra Johannes Martinus, Yoshiura Yasutoshi, Kikuchi Kiyoshi, Suzuki Yuzuru Hide authors
FISH & SHELLFISH IMMUNOLOGY 23 ( 5 ) 1107 - 1118 2007.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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SPMSM Design Considerations for Initial Position and Magnet Polarity Estimation using Carrier Signal Injection
Akatsu Kan, Harke Michael C., Lorenz Robert D.
CONFERENCE RECORD OF THE 2007 IEEE INDUSTRY APPLICATIONS CONFERENCE FORTY-SECOND IAS ANNUAL MEETING, VOLS. 1-5 2393 - + 2007 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A less sensor control method of PMSM using a hall sensor
Akatsu Kan, Mitomo Nobuhiro, Wakui Shinji
2007 EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS, VOLS 1-10 5002 - 5008 2007 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Lymphocyte surface marker genes in fugu
Suetake Hiroaki, Saha Nil Ratan, Araki Kyosuke, Akatsu Kanako, Kikuchi Kiyoshi, Suzuki Yuzuru
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 1 ( 1 ) 102 - 108 2006.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A comparison between axial and radial flux PM motor by optimum design method from the required output NT characteristics
Akatsu K, Wakui S
COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING 25 ( 2 ) 496 - 509 2006 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Four-beam scanning optical system with a converting function of seven-level print-dot-density
Mochizuki T, Shibayama Y, Akatsu K, Sakamoto J, Hashimoto Y, Kataoka K
IS&T'S NIP21: INTERNATIONAL CONFERENCE ON DIGITAL PRINTING TECHNOLOGIES, FINAL PROGRAM AND PROCEEDINGS 570 - 573 2005 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Zero Speed Sensorless Control of Induction Motor with Ideal Voltage Source
AKATSU Kan, KAWAMURA Atsuo
IEEJ Transactions on Industry Applications 120 ( 12 ) 1408 - 1418 2000.12 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
In the speed sensorless control of the induction motor, the machine parameters (especially the rotor resistance <i>R</i><sub>2</sub>) have a strong influence to the speed estimation. In addition, the output voltage error due to the dead time and the voltage drop of the inverter influence on the rotor flux estimation, but the simultaneous compensation of the output voltage and the stator resistance <i>R</i><sub>1</sub> is very difficult. In this paper the new algorithm of <i>R</i><sub>2</sub> estimation with utilizing only stator current is proposed. In the high frequency range, the <i>R</i><sub>2</sub> is estimated in the transient state, and in the very low frequency range, <i>R</i><sub>2</sub> is estimated in proportion to the estimated <i>R</i><sub>1</sub> when the ideal voltage source by the power op-amp is used instead of the voltage source inverter to avoid the output voltage error. In use of these algorithms, the low speed estimation was possible and the zero speed control was achieved under the 5_??_40% load condition in two motors. This paper clarified that the zero speed estimation is possible with the stator and rotor resistance estimations when the output voltage is ideal.
Other Link： https://ci.nii.ac.jp/naid/10005319179
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Akatsu K, Kawamura A
IEEE TRANSACTIONS ON POWER ELECTRONICS 15 ( 3 ) 553 - 560 2000.5 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
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Akatsu K, Kawamura A
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 36 ( 3 ) 764 - 771 2000 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
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Realization of Zero Speed Control of Induction Motor with Ideal Voltage Source without Speed Sensor
AKATSU Kan, KAWAMURA Atsuo
1999 ( 51 ) 67 - 72 1999.6 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10019018877
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AKATSU Kan, KAWAMURA Atsuo
IEEJ Transactions on Industry Applications 118 ( 12 ) 1409 - 1416 1998.12 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan Joint Work
In the speed sensorless control of the induction motor, the machine parameters (especially the secondary resistance <i>R</i><sub>2</sub>) have a strong influence to the speed estimation. It is known that the simultaneous estimation of the speed and <i>R</i><sub>2</sub> is impossible in the slip frequency type vector control, because the secondary flux is constant. But the secondary flux is not always constant in the speed transient state. In this paper the <i>R</i><sub>2</sub> estimation in the transient state without adding any additional signal to the stator current is proposed. This algorithm uses the least mean square algorithm and the adaptive algorithm, and it is possible to estimate the <i>R</i><sub>2</sub> exactly. This algorithm is verified by the digital simulations and the experiments.
Other Link： https://ci.nii.ac.jp/naid/10002727640
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AKATSU Kan, KAWAMURA Atsuo
1998 ( 57 ) 1 - 8 1998.7 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10024603151
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Akatsu K, Kawamura A
PESC 98 RECORD - 29TH ANNUAL IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1 AND 2 1575 - 1580 1998 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
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AKATSU Kan, KAWAMURA Atsuo
1997 ( 54 ) 7 - 12 1997.6 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10019026273
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Akatsu K, Kawamura A
PROCEEDINGS OF THE POWER CONVERSION CONFERENCE - NAGAOKA 1997, VOLS I AND II 73 - 78 1997 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
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AKATSU Kan, KIM Tae Woong, KAWAMURA Atsuo
1996 ( 53 ) 127 - 132 1996.6 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
Other Link： https://ci.nii.ac.jp/naid/10019024060
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DEVELOPMENT OF THE IMAGE TRANSMISSION DEVICE FOR HIGH-RESOLUTION COLOR STILL IMAGES, GT-1000 (IMAGE TALK)
WADA T, MURAKAMI T, AKATSU K, SAITOH O, TAKEDA M, OHNO R, ASADA K, NAITOH M
SHARP TECHNICAL JOURNAL ( 60 ) 55 - 60 1994.12 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work