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OBARA Hidemine
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【Published Thesis】 Flying-Capacitor Linear Amplifier With Capacitor Voltage Balancing for High-Efficiency and Low Distortion 2021.01
【Published Thesis】 Application of Multi-Level Converter for Fast Current Control in Small-Scale DC Power Network 2019.05
【Published Thesis】 Active Gate Control in Half-Bridge Inverters Using Programmable Gate Driver ICs to Improve both Surge Voltage and Converter Efficiency 2018.09
【Published Thesis】 Multilevel Cascaded H-Bridge Linear Amplifier with Unequal DC Capacitor Voltages Using a DC Voltage Source 2022.01
【Published Thesis】 Systematization of a Multilevel-Topology-Based Linear Amplifier Family for Noiseless DC-AC Power Conversion 2021.11
【Published Thesis】 Flying-Capacitor Linear Amplifier With Capacitor Voltage Balancing for High-Efficiency and Low Distortion 2021.01
【Published Thesis】 Application of Multi-Level Converter for Fast Current Control in Small-Scale DC Power Network 2019.05
【Published Thesis】 Active Gate Control in Half-Bridge Inverters Using Programmable Gate Driver ICs to Improve both Surge Voltage and Converter Efficiency 2018.09
Chiba University Doctor Course Completed
Docter(Engineering) - Chiba University
Master(Engineering) - Chiba University
Duty Yokohama National UniversityFaculty of Engineering Division of Intelligent Systems Engineering Associate Professor
Concurrently Yokohama National UniversityFaculty of Engineering
Concurrently Yokohama National UniversityFaculty of Engineering Division of Intelligent Systems Engineering Assistant Professor
Chuo University
Kyushu University Research Institute for Applied Mechanics
JSPS Special researcher of the Japan Society for the Promotion of Science
IEEE
電気学会
Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Power engineering
Electric Works Specialist (third kind)
Multilevel converter
Project Year：
パワーエレクトロニクス学入門（改訂版）
河村篤男、横山智紀、船渡寛人、星伸一、吉野輝雄、吉本貫太郎、小原秀嶺（ Role： Joint author）
コロナ社 （ ISBN:978-4-339-00980-4 ）
Language：Japanese Book type：Scholarly book
交流電源にインターフェイスされる電力変換回路および制御技術調査専門委員会（ Role： Contributor , 第2章）
電気学会
Language：Japanese Book type：Report
フライングキャパシタマルチレベルコンバータによる電力変換器の波形改善および高パワー密度化に関する研究
小原 秀嶺
2015.9
No Setting Single Work
Minimization of DC-Link Capacitance and Improved Operational Performance of a 5-Level Hybrid Multilevel DC-Link Inverter
Almachius Kahwa, Hidemine Obara, Yasutaka Fujimoto
IEEE Open Journal of Power Electronics 2022.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
Setiadi Hadi, Obara Hidemine
IEEJ Journal of Industry Applications advpub ( 0 ) 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>This study discusses a multilevel cascaded linear amplifier that includes multiple H-bridges. The amplifier operates the MOSFETs in the switch mode and active state. The MOSFETs in the switch mode change the voltage level to reduce the ripple voltage, which is filtered using the MOSFETs in the active state. Thus, the conversion efficiency of the amplifier is improved. The MOSFETs in the switch mode also control the charging state of the capacitor on the DC-side of each H-bridge to maintain the DC capacitor voltages. The amplifier can perform real power conversion with one DC voltage source as it can regulate the DC capacitor voltage of each H-bridge. Moreover, DC capacitor voltages are regulated at various values to further reduce the ripple filtered by MOSFETs in the active state. Lastly, DC capacitor voltage control was verified through a experiment using three H-bridges, and the measured conversion efficiency of the amplifier with unequal DC capacitor voltages was 87.9%.</p>
Kawamura Atsuo, Nasu Yoshiki, Miguchi Yasuhiko, Setiadi Hadi, Obara Hidemine
IEEJ JOURNAL OF INDUSTRY APPLICATIONS 11 ( 1 ) 175 - 184 2022.1 [Reviewed]
DOI Web of Science CiNii Research
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, a virtual transformer-based loss measurement method is proposed for inverter power conversion efficiency measurements, and the accuracy of this method is theoretically analyzed. This concept is further extended to a practical measurement procedure, wherein asynchronous loss measurements are conducted for powering and regenerating operations using a single set of measurement instruments. The average efficiency can be obtained with a very high accuracy after calibration of the measurement instruments. A high-efficiency system inverter was selected as the converter under test, and its efficiency and accuracy were experimentally measured and validated. An efficiency of 99.75% ± 0.006% was obtained at an output of 1600W.</p>
An Optimization Method of a Digital Active Gate Driver Under Continuous Switching Operation Being Capable of Suppressing Surge Voltage and Power Loss in PWM Inverters
Yamaguchi Daiki, Cheng Yu Shan, Mannen Tomoyuki, Obara Hidemine, Wada Keiji, Sai Toru, Takamiya Mak … Show more authors
Yamaguchi Daiki, Cheng Yu Shan, Mannen Tomoyuki, Obara Hidemine, Wada Keiji, Sai Toru, Takamiya Makoto, Sakurai Takayasu Hide authors
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 58 ( 1 ) 481 - 493 2022.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
Systematization of a Multilevel-Topology-Based Linear Amplifier Family for Noiseless DC-AC Power Conversion
Obara Hidemine, Ohno Tatsuki, Kawamura Atsuo
IEEE ACCESS 9 159627 - 159639 2021.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
十見百聞 伝統と革新の融合によるサステナブルな建築技術―業界を支える建築研究所の研究開発―
小原 秀嶺, 堤 昂哉, 古川 眞輝
電気学会誌 142 ( 3 ) 2022.3
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Single Work
十見百聞 エネルギーの「もったいない」を追求する―省エネと快適性を両立するオートメーション技術―
小原 秀嶺, 石橋 隆之, 伊藤 正悟, 海原 拓朗, 小袖 義貴
電気学会誌 139 ( 7 ) 2019.7
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Single Work
Students and Young Engineers Meeting Held at IPEC 2018-ECCE Asia
Ryuji Iijima, Yoshikazu Kuwabara, Daiki Yamaguchi, Yuta Yanagisawa, Yoshihiro Miwa, Hidemine Obara, … Show more authors
Ryuji Iijima, Yoshikazu Kuwabara, Daiki Yamaguchi, Yuta Yanagisawa, Yoshihiro Miwa, Hidemine Obara, Yongheng Yang Hide authors
IEEE Power Electronics Magazine 5 ( 3 ) 2018.9
Authorship：Corresponding author Language：English Publishing type：Meeting report Single Work
ソーラー・デカスロン・ヨーロッパ2014－千葉大学の挑戦
川瀬貴晴，田島翔太，小原 秀嶺，羽澄亮平，那須智子
太陽エネルギー学会誌「太陽エネルギー」 40 ( 6 ) 53 - 61 2014.12
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Single Work
線形増幅器、及び電力変換装置
小原 秀嶺，大野 達樹，片山 正也，河村 篤男
Application no：特願2017-47150 Date applied：2017.3
Country of applicant：Domestic
ゲート駆動装置
小原 秀嶺，和田 圭二
Application no：特願2016-166831 Date applied：2016.8
Country of applicant：Domestic
電力変換回路および装置
佐藤 之彦，小原 秀嶺，中島 昭，大橋 弘通，西澤 伸一
Application no：特願2013-186885 Date applied：2013.9.10
Country of applicant：Domestic
マルチレベル電力変換回路および装置
佐藤 之彦，小原 秀嶺，大橋 弘通，中島 昭，西澤 伸一
Application no：特願2012-201460 Date applied：2012.9.13
Patent/Registration no：特許2014-535533 Date issued：2016.10.21
Country of applicant：Domestic
論文査読促進賞
2021.5 電気学会産業応用部門
Individual or group name of awards：小原秀嶺
Best Paper Award
2019.11 IEEE International Future Energy Electronics Conference (IFEEC) 2019
Individual or group name of awards：Hidemine Obara
部門活動功労賞
2019.9 電気学会産業応用部門
Individual or group name of awards：小原秀嶺
電気学会半導体電力変換研究会 優秀論文発表賞
2013.6 電気学会
Individual or group name of awards：小原 秀嶺
電気学会産業応用部門大会 優秀論文発表賞
2011.9 電気学会
Individual or group name of awards：小原 秀嶺
エネルギー回生可能な革新的双方向アクチュエータの実現
Grant number：21H04556 2021.4 - 2024.3
Grant-in-Aid for Scientific Research(A)
Investigator(s)：藤本 康孝
Authorship：Coinvestigator(s)
三次元運動制御を実現する６自由度円筒リニアモータの創製
Grant number：21H01306 2021.4 - 2024.3
Grant-in-Aid for Scientific Research(B)
Investigator(s)：下野 誠通
Authorship：Coinvestigator(s)
電磁ノイズを発生しないパワーエレクトロニクス基盤技術の創生
2020.4 - 2023.3
科学研究費補助金 Grant-in-Aid for Scientific Research(B)
Investigator(s)：小原 秀嶺
Authorship：Principal investigator Grant type：Competitive
フライングキャパシタ線形増幅回路の超多直列化によるノイズレスインバータの実現
2018.4 - 2020.3
科学研究費補助金
Authorship：Principal investigator Grant type：Competitive
効率99.9％級のエネルギー変換が拓く持続発展可能グリーン社会の実現
2017.6
科学研究費補助金 Grant-in-Aid for Scientific Research(S)
Grant type：Competitive
SSTの高性能化に向けた回路・デバイス・制御技術の統合技術開発
2021.12 - 2026.3
Ministry of Education, Culture, Sports, Science and Technology 革新的パワーエレクトロニクス創出基盤技術研究開発事業
デジタルアクティブゲート技術を駆使したノイズフリー・パワエレ電力ネットワークの創生
2021.10 - 2024.9
ＮＥＤＯ先導研究プログラム 未踏チャレンジ２０５０
新世代Si-IGBTと応用基本技術の研究開発
2017.4 - 2020.3
NEDO 低炭素社会を実現する次世代パワーエレクトロニクスプロジェクト
Investigator(s)：平本俊郎
Study on Application of Multi-Level Converter to Realize Fast Current Control in DC Micro-Grid with Extremely Low Impedance Interconnections
Masaya Katayama, Tatsuki Ohno, Hidemine Obara, and Atsuo Kawamura
IEEE PEDS 2017
Event date： 2017.12
Language：English Presentation type：Oral presentation (general)
Venue：Honolulu, USA
DOI: 10.1109/PEDS.2017.8289205
Browse Conferences > Power Electronics and Drive S... Flying-capacitor linear amplifier to realize both high-efficiency and low distortion for power conversion applications requiring high-quality waveforms
Tatsuki Ohno, Masaya Katayama, Hidemine Obara, Atsuo Kawamura
2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)
Event date： 2017.12
Language：English Presentation type：Oral presentation (general)
Venue：Honolulu, HI, USA
DOI: 10.1109/PEDS.2017.8289202
Range extension of electric vehicles by two battery HEECS chopper based power train
Ayato Tamura, Koji Kobayashi, Yukinori Tsuruta, Kazuaki Kojima, Hidemine Obara, Atsuo Kawamura
2017 IEEE Energy Conversion Congress and Exposition (ECCE)
Event date： 2017.11
Language：English Presentation type：Oral presentation (general)
Venue：Cincinnati, OH, USA
DOI: 10.1109/ECCE.2017.8096770
Power electronics 2.0: IoT-connected and Al-controlled power electronics operating optimally for each user
Makoto Takamiya, Koutaro Miyazaki, Hidemine Obare True Sai
2017 29th International Symposium on Power Semiconductor Devices and IC's (ISPSD)
Event date： 2017.6
Language：English Presentation type：Oral presentation (general)
Venue：Sapporo, Japan
10.23919/ISPSD.2017.7988875
Total volume reduction of passive components in Grid-connected converters by introducing flying capacitor multilevel topology
Sae Mochidate, Yukihiko Sato, Tomotate Ito, Hidemine Obara
2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)
Event date： 2017.6
Language：English Presentation type：Oral presentation (general)
Venue： Kaohsiung, Taiwan
DOI: 10.1109/IFEEC.2017.7992098
電動ハイブリッド推進系用パワエレ機器性能推定ツール構築
Offer organization: 宇宙航空研究開発機構（JAXA） Funded Research offered by Enterprises
Project Year： 2021.8 - 2022.2
高昇圧高効率電力変換器の研究
Offer organization: アルプスアルパイン株式会社，千葉大学 Cooperative Research within Japan
Project Year： 2021.6 - 2022.3
パワー半導体パッケージおよびパワーモジュールの内部熱インピーダンス抽出法に関する研究と開発
Offer organization: アンソフト・スピリット株式会社 Cooperative Research within Japan
Project Year： 2020.11 - 2021.10
パワーエレクトロニクス用無線センサの開発
Cooperative Research within Japan
Project Year： 2019.7 - 2020.1
インテリジェントデジタルモジュールを実現する多直列制御技術のFS研究
Offer organization: 一般社団法人NPERC-J Funded Research offered by Enterprises
Project Year： 2019.4 - 2021.9
2022 An Introduction to Programming
College of Engineering Science
2022 Basic Programming
College of Engineering Science
2022 Programing I
College of Engineering Science
パワーエレクトロニクス
2018.4 Institution：中央大学
Level：Undergraduate (specialized)
電気学会令和４年全国大会グループ委員会
2021.6 - 2022.6 ６グループ委員
Committee type：Academic society
IPEC2022組織委員会
2020.7 - 2023.3 幹事
Committee type：Academic society
電気学会2020年産業応用部門オンライン・ハイブリッド研究会推進WG
2020.6 委員
Committee type：Academic society
電気学会 IPEC2022実行委員会
2019.12 幹事
Committee type：Academic society
電気学会産業応用部門英文論文誌戦略委員会
2019.6 委員
Committee type：Academic society
横浜パワーエレクトロニクスカレッジ
Role(s)： Lecturer, Planner
YUVEC 2020.4
Impact of Multi-Level Converter on Motion Control and Micro-Grid Applications
Role(s)： Guest
Beijing Power Electronics Society Academic Report Tsinghua University 2016.9
