Updated on 2022/03/28

写真a

 
YAMAMOTO Masayoshi
 
Organization
Institute of Materials and Systems for Sustainability Center for Integrated Research of Future Electronics Division Professor
Graduate School
Graduate School of Engineering
Title
Professor
Contact information
メールアドレス
External link

Degree 1

  1. Ph.D. (Engineering) ( 2004.3   Yamaguchi University ) 

Research Interests 2

  1. Power Electronics

  2. パワーエレクトロニクス

Research Areas 1

  1. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Power engineering  / Power Electronics

Current Research Project and SDGs 1

  1. 次世代航空機の電動化に関する研究

Research History 5

  1. Nagoya University   Professor

    2017.5

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    Country:Japan

  2. Nagoya University

    2016.12 - 2017.4

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    Country:Japan

  3. Shimane University   Associate professor

    2011.4 - 2017.4

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    Country:Japan

  4. Shimane University   Lecturer

    2006.4 - 2011.3

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    Country:Japan

  5. サンケン電気株式会社

    2004.4 - 2006.3

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    Country:Japan

Education 1

  1. Yamaguchi University   Graduate School, Division of Science and Engineering

    - 2003

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    Country: Japan

Professional Memberships 18

  1. 自動車技術会

  2. パワーエレクトロニクス学会

  3. 電子情報通信学会

  4. 電気学会

  5. IEEE

  6. 交流電源にインタフェースされるパワーエレクトロニクス回路技術調査専門委員会

  7. 中国支部役員会・電気学会

  8. ワイヤレス電力伝送システムにおける電力変換技術協同研究委員会

  9. 交流電源インターフェイス用コンバータ技術調査専門委員会 ・電気学会

  10. 新材料半導体パワーデバイスとその利用に関する技術協同研究委員会

  11. 新材料パワー半導体の変換器応用に関する技術協同研究委員会

  12. 平成26年電子・情報・システム部門大会実行委員会

  13. 平成26年電子・情報・システム部門大会委員会

  14. 平成28・29年度学会活動推進員〔中国支部〕

  15. 平成26・27年度学会活動推進員〔中国支部〕 ・電気学会

  16. 平成24年全国大会実行委員会

  17. 島根県パワーエレクトロニクス研究会

  18. 商用電源にインターフェイスされる電力変換システム技術調査専門委員会・電気学会

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Committee Memberships 18

  1. 論文委員会(D6グループ)   委員  

    2020.1   

  2. 選挙管理委員会   委員  

    2019.10 - 2021.6   

  3. 総務会議   委員 東海 総務担当  

    2019.5 - 2020.6   

  4. 電動車両のパワーコントロールユニットの高性能化に関する協同研究委員会   委員  

    2019.4 - 2021.3   

  5. ICEMS2020実行委員会   委員  

    2019.4 - 2021.3   

  6. 広報委員会   委員  

    2018.6 - 2019.5   

  7. 編修専門第3部会   委員  

    2018.5 - 2020.6   

  8. 東海支部役員会   総務企画幹事  

    2018.5 - 2020.6   

  9. SiCとGaNと共に発展するパワーエレクトロニクスにおけるシステムインテグレーション技術調査   委員  

    2018.4 - 2021.3   

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    Committee type:Academic society

  10. 交流電源にインタフェースされる電力変換回路および制御技術調査専門委員会   幹事  

    2018.4 - 2020.3   

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    Committee type:Academic society

  11. 平成30・31年度学会活動推進員〔東海支部〕   総務企画幹事  

    2018.4 - 2020.3   

  12. 日本学術振興会 産学協力研究委員会   副委員長  

    2016.10   

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    Committee type:Academic society

  13. 平成28・29年度学会活動推進員〔中国支部〕   推進員(学校)  

    2016 - 2018   

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    Committee type:Academic society

    平成28・29年度学会活動推進員〔中国支部〕

  14. IPEC2018組織委員会   委員  

    2015.12 - 2019.3   

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    Committee type:Academic society

  15. IPEC2018組織委員会   委員  

    2015 - 2019   

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    Committee type:Academic society

    IPEC2018組織委員会

  16. 自動車用パワーエレクトロニクスの新展開調査専門委員会   委員  

    2015 - 2017   

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    Committee type:Academic society

    自動車用パワーエレクトロニクスの新展開調査専門委員会

  17. 新材料パワー半導体の変換器応用に関する技術協同研究委員会   委員長  

    2015 - 2017   

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    Committee type:Academic society

    新材料パワー半導体の変換器応用に関する技術協同研究委員会

  18. 電気学会半導体電力変換技術委員会   1号委員  

    2014.1   

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    Committee type:Academic society

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Awards 3

  1. 優秀論文発表賞

    2022.2   電気学会 半導体電力変換研究会   直流ブラシモータにおけるスパイクサージ の分析と解析モデルの提案

    片桐高大

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  2. 電気学会優秀論文発表賞

    2022.1   電気学会  

    塩山 知

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  3. 第16回WPT研コンテスト 優秀賞

    2020.11   WPT研究会   電界&磁界ハイブリッド結合!!反射波も利用できる 走れ!オメガ・ヴィークル

    蔵本 大樹、大矢 根蒼、大野 広道、山本 真義様

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    Country:Japan

 

Papers 68

  1. A simple gate driver design for GaN-based switching devices with improved surge voltage and switching loss at 1 MHz operation International coauthorship International journal

    Jodo Shota, Iwaki Toshihiro, Uchiyama Kosuke, Islam Md. Zahidul, Kataoka Kensuke, Hayakasa Yuki, Imaoka Jun, Yamamoto Masayoshi, Niitsu Kiichi

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 60 ( SA )   2021.1

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    Language:English  

    Web of Science

  2. Effect of Tunnel Pits Radius Variation on the Electric Characteristics of Aluminum Electrolytic Capacitor Reviewed International journal

    IEICE TRANSACTIONS ON ELECTRONICS   Vol. E104C ( 1 ) page: 22 - 33   2021.1

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    Authorship:Last author   Language:English  

    DOI: 10.1587/transele.2020ECP5009

    Web of Science

  3. Effects of Secondary Leakage Inductance on the LLC Resonant Converter Reviewed International coauthorship International journal

    Noah Mostafa, Shirakawa Tomohide, Umetani Kazuhiro, Imaoka Jun, Yamamoto Masayoshi, Hiraki Eiji

    IEEE TRANSACTIONS ON POWER ELECTRONICS   Vol. 35 ( 1 ) page: 835 - 852   2020.1

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  4. Current and Voltage Hybrid Source Gate Driver for Maximizing the Switching Capability of SiC MOSFETs Reviewed International journal

    Ishido Ryosuke, Okawauchi Yuta, Nakahara Ken, Shirai Shinya, Yamamoto Masayoshi

    2020 IEEE WORKSHOP ON WIDE BANDGAP POWER DEVICES AND APPLICATIONS IN ASIA (WIPDA ASIA)     2020

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    Authorship:Last author   Language:English  

    DOI: 10.1109/WiPDAAsia49671.2020.9360286

    Web of Science

  5. Dielectric Characteristics Analysis of Aluminum Electrolytic Capacitors Based on Linear Response Function Reviewed International journal

    Mukaiyama Daisaku, Yamamoto Masayoshi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 166 ( 16 ) page: E554 - E563   2019.12

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    Authorship:Last author   Language:English  

    DOI: 10.1149/2.0551916jes

    Web of Science

  6. Improved core loss calculation method considering the non-uniform distribution of magnetic flux density in powder cores Reviewed International coauthorship International journal

    Ishikura Yuki, Imaoka Jun, Noah Mostafa, Yamamoto Masayoshi

    IET POWER ELECTRONICS   Vol. 12 ( 6 ) page: 1393 - 1399   2019.5

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    Authorship:Last author   Language:English  

    DOI: 10.1049/iet-pel.2018.5362

    Web of Science

  7. A Current Sharing Method Utilizing Single Balancing Transformer for a Multiphase LLC Resonant Converter With Integrated Magnetics Reviewed International coauthorship International journal

    Noah Mostafa, Endo Shun, Ishibashi Hiroki, Nanamori Kimihiro, Imaoka Jun, Umetani Kazuhiro, Yamamoto Masayoshi

    IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS   Vol. 6 ( 2 ) page: 977 - 992   2018.6

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    Authorship:Last author   Language:English  

    DOI: 10.1109/JESTPE.2017.2777508

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  8. A Magnetic Design Method Considering DC-Biased Magnetization for Integrated Magnetic Components Used in Multiphase Boost Converters Reviewed International coauthorship International journal

    Imaoka Jun, Okamoto Kenkichiro, Kimura Shota, Noah Mostafa, Martinez Wilmar, Yamamoto Masayoshi, Shoyama Masahito

    IEEE TRANSACTIONS ON POWER ELECTRONICS   Vol. 33 ( 4 ) page: 3346 - 3362   2018.4

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  9. Total volume evaluation of high-power density non-isolated DC-DC converters with integrated magnetics for electric vehicles Reviewed International coauthorship International journal

    Martinez Wilmar, Cortes Camilo, Yamamoto Masayoshi, Imaoka Jun, Umetani Kazuhiro

    IET POWER ELECTRONICS   Vol. 10 ( 14 ) page: 2010 - 2020   2017.11

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  10. Transformer with Adjustable Path-Core Type Inductance for Use in GaN-HEMT LLC Resonant Converter

    Ou Tengfei, Noah Mostafa, Tsuruya Mamoru, Namiki Seiji, Morita Koichi, Imaoka Jun, Yamamoto Masayoshi

    IEEJ Journal of Industry Applications   Vol. 11 ( 1 ) page: 41 - 48   2022

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    Language:Japanese   Publisher:The Institute of Electrical Engineers of Japan  

    <p>A novel magnetic structure for use in LLC resonant converters is proposed in this paper. It is known as a Path-core type Resonant Inductance Adjustable (PRIA) transformer, which is a type of transformer with adjustable resonant inductance. In the proposed transformer, the resonant inductance and magnetizing inductance can be designed separately; therefore, it becomes less challenging to realize the required resonant frequency. Moreover, the magnetizing inductance is not affected by any variation in the resonant inductance. The proposed PRIA transformer is found to improve the efficiency of the LLC converters. In this paper, the design of a resonant inductance of a PRIA transformer is presented. In addition, the application of PRIA transformers to a 1-MHz LLC resonant converter and 1kW 1.4-MHz LLC resonant converter is presented.</p>

    DOI: 10.1541/ieejjia.21002488

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    Scopus

    CiNii Research

  11. Time-Shifted Control of Self-Synchronous Rectifier for MHz Wireless Power Transfer Systems

    Sasaki M., Sakuno K., Yamamoto M.

    IEEE International Symposium on Industrial Electronics   Vol. 2021-June   2021.6

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    Language:Japanese   Publisher:IEEE International Symposium on Industrial Electronics  

    Recently wireless power transfer systems via resonant magnetic coupling (MRC-WPT) is the promising wireless power supply method to mobile applications. 13.56MHz highly resonant wireless power receivers experience high rectifier losses when using Schottky diodes and can fail to meet the thermal limit requirements for many products such as laptops. Therefore, the synchronous rectification is one of the effective solutions. However, the increased occupancy of the control signal propagation delay in switching cycle, tend to make the introduction of the synchronous rectification difficult. This novel synchronous rectifier can operate under any propagation delay of gate drivers. The analysis successfully verified the operating principle and clarified the usefulness of the proposed control for MHz WPT systems.

    DOI: 10.1109/ISIE45552.2021.9576180

    Scopus

  12. Cooperative Control of Multi-Input Modular DC/DC Converter for Electric Off-Highway Vehicles

    Piao Qingyun, Kakisaka Tasuku, Imaoka Jun, Yamamoto Masayoshi, Konoto Masaaki

    IEEJ Transactions on Industry Applications   Vol. 141 ( 4 ) page: 304 - 312   2021.4

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    Language:Japanese   Publisher:The Institute of Electrical Engineers of Japan  

    <p>A cooperative control scheme for a power conversion system having several energy sources and modular dc/dc converters is proposed in this paper. The proposed cooperative control approach has the advantage of realizing constant dynamic characteristics even when the different input voltages fluctuate or when the output power of each input voltage source is limited. The effectiveness of the proposed cooperative control method is verified via simulation and experiment.</p>

    DOI: 10.1541/ieejias.141.304

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    CiNii Research

  13. Improvement of the Transmission Efficiency in the Electric Field Resonance Wireless Power Transmission by Utilizing Helical Resonators

    OYANE Aoi, YAMAMOTO Masayoshi

      Vol. J104-B ( 3 ) page: 309 - 311   2021.3

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    The efficiency of electric field resonance wireless power transmission (WPT) is low in long distances. However, the proposed system realizes high efficiency in long distances by utilizing high-Q helical resonators. The transmission efficiency of the proposed system is increased by at most 69.4% compared with the conventional system at 27.12MHz.

    DOI: 10.14923/transcomj.2020gwl0001

    CiNii Research

  14. A Novel Power Loss Calculation Method for Power Magnetic Components in Power Converters

    Ishikura Yuki, Hosotani Tatsuya, Yamamoto Masayoshi

    IEEJ Transactions on Fundamentals and Materials   Vol. 141 ( 1 ) page: 69 - 75   2021.1

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    Language:Japanese   Publisher:The Institute of Electrical Engineers of Japan  

    <p>This paper reports a power loss calculation method for magnetic components in power converters. The differences in B-H loop areas are analyzed and discussed in case of sinusoidal waveform and square wave voltage excitation. Relying on the output results, iron loss calculation method based on square wave excitation is proposed. Experimental results show that the proposed iron loss calculation method is accurate compared with the traditional method using Steinmetz's equation. In addition, the proposed method reduces the calculation procedure compared with the method using Steinmetz's equation. The proposed iron loss calculation method is very practical and beneficial for converter designers.</p>

    DOI: 10.1541/ieejfms.141.69

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  15. Bidirectional Converter with Multi-stage FETs Featuring Voltage Balance Control Function Using Variable Capacitors

    IEEJ JOURNAL OF INDUSTRY APPLICATIONS   Vol. 10 ( 1 ) page: 100 - 106   2021

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    Authorship:Last author   Language:English  

    DOI: 10.1541/ieejjia.19003873

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  16. Reversed Configuration Boost Converter to Reduce Effective CM Capacitance

    Sasaki M., Imaoka J., Yamamoto M.

    2021 IEEE International Future Energy Electronics Conference, IFEEC 2021     2021

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    Language:Japanese   Publisher:2021 IEEE International Future Energy Electronics Conference, IFEEC 2021  

    More and more wide band gap power devices are used in switching converters to achieve high power density and high efficiency. However,those devices increase electromagnetic interference (EMI),especially common mode (CM) noise propagates through parasitic capacitance. A noise filter is a popular way to decrease EMI. But a filter decreases the power density of the converter because of the bulk components. Therefore,a noise reduction method with small increase in volume and weight is necessary. In this paper,a novel but simple circuit configuration for high power application to reduce CM noise is investigated in simulation and experiment.

    DOI: 10.1109/IFEEC53238.2021.9662002

    Scopus

  17. Magnetic Design Method for Multi-Material Inductor to Flatten Efficiency Curve of Power Converters within Wide Load Ranges Invited Reviewed

    Ishikura Y, Imaoka J., Noah M., Aoki T, Ito K, Yamamoto M

    IEEE Transactions on Magnetics   Vol. 56 ( 10 ) page: 1 - 8   2020.10

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  18. Magnetic Design Method for Multi-Material Inductor to Flatten Efficiency Curve of Power Converters Within Wide Load Ranges Reviewed International coauthorship International journal

    Ishikura Yuki, Imaoka Jun, Noah Mostafa, Aoki Tatsuya, Ito Koichiro, Yamamoto Masayoshi

    IEEE TRANSACTIONS ON MAGNETICS   Vol. 56 ( 10 )   2020.10

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  19. Output Power Pulsation Suppressed with an Activity Smoothen Buck-Boost Converter to Achieve Electrolytic Capacitor-less AC/DC Converter

    Ou T., Namiki S., Tsuruya M., Noah M., Morita K., Mukaiyama D., Imaoka J., Yamamoto M.

    12th AEIT International Annual Conference, AEIT 2020     2020.9

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    Language:Japanese   Publisher:12th AEIT International Annual Conference, AEIT 2020  

    An Activity Smoothen Circuit with bidirectional Buck-Boost Converter (AS-BBC) was approached to smoothen the output power of a power factor correction (PFC) converter, which is an AC/DC converter, without using any electrolytic capacitors in this paper. In order to smoothen the output pulsation current of the PFC converter, electrolytic capacitors have been used generally, since electrolytic capacitors have a large magnitude capacity. However, there is a lifespan to electrolytic capacitors. On the other hand, film capacitors have a semi-permanent lifespan with so much less magnitude capacity than electrolytic capacitors. A way of using the AS-BBC to make a small capacitor work like a large capacitor as a smoothing capacitor to handle the output power is presented in this paper. Approximately 47% of the pulsation output is suppressed with a 4.4μ F film capacitor with the AS-BBC. Since there is no electrolytic capacitor adapted, a semi-permanent lifespan PFC converter is achieved successfully.

    DOI: 10.23919/AEIT50178.2020.9241166

    Scopus

  20. Temperature Dependency Modeling, Simulation and Experimental Validations of DC Superimposition Characteristics for Gapped-Ferrite Inductor Including Saturation Region

    Imaoka J., Aoki T., Shigematsu K., Yamamoto M.

    IEEE International Symposium on Industrial Electronics   Vol. 2020-June   page: 1466 - 1473   2020.6

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    Language:Japanese   Publisher:IEEE International Symposium on Industrial Electronics  

    To realize the early development of power converters, research on the front-loading design in which the efficiency, control characteristics, converter size, thermal management, and Electromagnetic Compatibility (EMC) are carefully considered before making a prototype, has been attracting. To carefully design and predict these design factors before prototyping, making accurate models of active/passive components operated on simulation of the multi-physical domain such as thermal, magnetic, and electrical is indispensable. This is because these characteristics of active/passive components on power converters are affected by each other. In this background, this paper proposes a nonlinear relative permeability modeling method with a temperature dependency of gapped-ferrite cores. The temperature dependency of the effective relative permeability of the gapped-ferrite core is investigated under core temperature within-50°C-+ 150°C. As features of the proposed modeling method and simulation model, a simple mathematical equation and lookup tables are utilized for simple implementation to the simulator. The validity of the proposed modeling method is confirmed by both simulation and experimental tests under operating conditions including the magnetic saturation regions.

    DOI: 10.1109/ISIE45063.2020.9152521

    Scopus

  21. Technical Trend of Power Electronics Systems for Automotive Applications Invited Reviewed

    Yamamoto M., Kakisaka T, Imaoka J

    Japanese Journal of Applied Physics   Vol. 59 ( SG ) page: 0805-1 - 0805-13   2020.4

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    Authorship:Lead author   Language:English  

  22. 多段FET駆動技術を用いた双方向コンバータ Invited Reviewed

    石倉祐樹 ,細谷達也, 山本 真義

    電子情報通信学会論文誌 B   Vol. J103-B ( No.4 ) page: .154 - 161   2020.4

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    Authorship:Last author   Language:Japanese  

  23. Technical trend of power electronics systems for automotive applications Reviewed International journal

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59   2020.4

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  24. Bidirectional Converter Using Multi-stage FET Driving Technique

    ISHIKURA Yuki, HOSOTANI Tatsuya, YAMAMOTO Masayoshi

      Vol. J103-B ( 4 ) page: 154 - 161   2020.4

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    Language:Japanese  

    This paper presents a bidirectional converter using by multi-stage FET driving technique. The proposed converter is constructed by implementing series connected low voltage Si-FETs in multi-stage. A driving circuit using multi-stage driving technique can drive series connected FETs from the one power supply without any isolated power supplies and high voltage process ICs. In addition, the balancing capacitors which constructed the converter have voltage averaging function in drain-source voltage to tackle the voltage unbalance between the series connected FETs. Using the figure of merit which can estimate converter losses from the specification of power devices, the usefulness of the circuit configuration which using low voltage Si-FETs instead of SiC-FETs is shown. The effect of the voltage averaging function by the balancing capacitors, the operating principle of the driving circuit and the power conversion mechanism are clarified and presented using the circuit simulator and a converter equivalent circuit. The experimental results show that the proposed driving technique allows the bidirectional converter to achieve a maximum power conversion efficiency of 99.2%.

    DOI: 10.14923/transcomj.2019jbp3022

    CiNii Research

  25. Bidirectional Converter with Multi-stage FETs Featuring Voltage Balance Control Function Using Variable Capacitors

    Ishikura Yuki, Hosotani Tatsuya, Yamamoto Masayoshi

    IEEJ Transactions on Industry Applications   Vol. 140 ( 3 ) page: 168 - 174   2020.3

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    Language:Japanese   Publisher:The Institute of Electrical Engineers of Japan  

    <p>This paper presents a bidirectional converter with multi-stage FETs featuring voltage balance control function using variable capacitors. The proposed converter is constructed using low-voltage Si-FETs in a series connection, and it improves the voltage balance between the drain-source voltages of the series connected FETs in the OFF period. Using the converter figure of merit (FOM), which can estimate the converter losses from the specifications of the FETs, the effectiveness of the proposed converter is compared to that of a converter using SiC-FETs. The factors of the voltage unbalance are analytically clarified using the equivalent circuit. The principle of voltage balance control function using the variable capacitor is discussed. The experimental results show that the proposed converter can achieve a maximum power conversion efficiency of 99.2%.</p>

    DOI: 10.1541/ieejias.140.168

    Scopus

    CiNii Research

  26. Voltage Balancing Control Method Using Variable Capacitors with Simple Turn-on Adjusting Function for Multi-Stage FET Bidirectional Converter

    Ishikura Y., Hosotani T., Noah M., Imaoka J., Yamamoto M.

    Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC   Vol. 2020-March   page: 2944 - 2949   2020.3

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    Language:Japanese   Publisher:Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC  

    This paper proposes a voltage balancing control method using variable capacitors with simple turn-on adjusting function for multi-stage FET bidirectional converter. The proposed voltage balancing control circuit is composed of a feedback circuit using photocouplers and a delay circuit using variable capacitors with turn-on adjusting diodes. The proposed voltage balancing circuit can reduce the drain-source voltage unbalance which occur during the turn-on and turn-off period of series-connected FETs. The theoretical discussion includes analyzing the unbalanced drain-source voltage in seriesconnected FETs using a simplified converter. Also, the principal of the proposed voltage balancing control method is clarified. The experimental results show that the proposed voltage balancing control method can reduce the drain-source voltage difference Δvds of series-connected FETs from 36 V to 11 V (69% reduction in Δvds) during the turn-off and from 22 V to 11 V (50% reduction in Δvds) during the turn-on period. The multistage FET bidirectional converter can achieve a maximum power conversion efficiency of 99.2%.

    DOI: 10.1109/APEC39645.2020.9124221

    Scopus

  27. A simple gate driver design for GaN-based switching devices with improved surge voltage and switching loss at 1-MHz operation Invited Reviewed

    Shota Jodo, Toshihiro Iwaki, Kosuke Uchiyama, Md. Islam, Kensuke Kataoka, Yuki Hayasaka, Jun Imaoka, Masayoshi Yamamoto, Kiichi Niitsu

    Japanese Journal of Applied Physics   Vol. No. 60 ( SADD02 ) page: SAAD02-1 - SAAD02   2020

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  28. Analysis of Common Mode Noise Reduction Mechanism in A Shielded Inductor

    Sasaki Mamoru, Imaoka Jun, Yamamoto Masayoshi, Nakano Akira, Fuse Koji

    2020 IEEE 29TH INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE)     page: 660 - 665   2020

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  29. Voltage Balancing Control Method Using Variable Capacitors with Simple Turn-on Adjusting Function for Multi-Stage FET Bidirectional Converter

    Ishikura Yuki, Hosotani Tatsuya, Noah Mostafa, Imaoka Jun, Yamamoto Masayoshi

    2020 THIRTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2020)     page: 2944 - 2949   2020

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    Authorship:Last author   Language:English  

    Web of Science

  30. Temperature Dependency Modeling, Simulation and Experimental Validations of DC Superimposition Characteristics for Gapped-Ferrite Inductor Including Saturation Region

    Imaoka Jun, Aoki Tatsuya, Shigematsu Koichi, Yamamoto Masayoshi

    2020 IEEE 29TH INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE)     page: 1466 - 1473   2020

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    Authorship:Last author   Language:English  

    Web of Science

  31. Comparison of switching performance between GaN and SiC MOSFET via 13.56MHz Half-bridge Inverter

    Xiong Yi, Oyane Aoi, Ou Tengfei, Thilak Senanayake, Imaoka Jun, Yamamoto Masayoshi

    2020 IEEE 29TH INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE)     page: 672 - 676   2020

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    Language:English  

    Web of Science

  32. Energy Management Storage System with a Multi-stage FET Bidirectional Converter

    Ishikura Yuki, Hosotani Tatsuya, Yamamoto Masayoshi

    Journal of the Japan Institute of Power Electronics   Vol. 46 ( 0 ) page: 44 - 50   2020

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    Language:Japanese   Publisher:The Japan Institute of Power Electronics  

    This paper presents an energy management storage system with a multi-stage FET bidirectional converter. The
    proposed system is constructed by a bidirectional converter using series connected FETs, and it realizes highly energy management that maximizes battery performance. By calculating the power loss using the converter performance index FOM (Figure of merit), it is shown that the proposed configuration can be possible to reduce the power loss 70% compared to the conventional configuration. In the proposed system, using a power control method that reduces the charging current, the battery charging losses can be reduced 60%. The analysis results show that the proposed system can achieve a charging energy efficiency of 96.9%, and reduce the yearly CO2 emission of 33%.

    DOI: 10.5416/jipe.46.44

    CiNii Research

  33. Modeling, Magnetic Design, Simulation Methods, and Experimental Evaluation of Various Powder Cores Used in Power Converters Considering Their DC Superimposition Characteristics Reviewed International journal

    Imaoka Jun, Okamoto Kenkichiro, Shoyama Masahito, Ishikura Yuki, Noah Mostafa, Yamamoto Masayoshi

    IEEE TRANSACTIONS ON POWER ELECTRONICS   Vol. 34 ( 9 ) page: 9033 - 9051   2019.9

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  34. 東海支部における地域貢献活動紹介

    山本 真義

    電気学会誌   Vol. 139 ( 4 ) page: 244 - 244   2019.4

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    Language:Japanese   Publisher:一般社団法人 電気学会  

    <p>はじめに</p><p>電気学会東海支部としては,学術講演会,講習会,見学会,サイエンスセミナーなどの諸行事を開催し,学会活動の一層のオープン化を目指している。今回はそういった地域貢</p>

    DOI: 10.1541/ieejjournal.139.244

    CiNii Research

  35. Comparative Evaluation of Electrical and Calorimetric Methods to Estimate Core Loss in Powder Cores

    Ishikura Yuki, Imaoka Jun, Noah Mostafa, Yamamoto Masayoshi

    IEEJ JOURNAL OF INDUSTRY APPLICATIONS   Vol. 8 ( 3 ) page: 386 - 393   2019

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    Authorship:Last author   Language:English  

    DOI: 10.1541/ieejjia.8.386

    Web of Science

  36. Study on the Imbalanced Voltage of Series-connected Active Power Semiconductor Devices in Power Conversion Systems

    Zhang Hongjing, Imaoka Jun, Noah Mostafa, Ishikura Yuki, Yamamoto Masayoshi

    2019 IEEE WORKSHOP ON WIDE BANDGAP POWER DEVICES AND APPLICATIONS IN ASIA (WIPDA ASIA 2     2019

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    Authorship:Last author   Language:English  

    Web of Science

  37. Magnetic Design Method for Multi-Material Powder Core Inductor to Improve Efficiency of Bidirectional DC/DC Converter within Wide Load Range

    Imaoka J., Ishikura Y., Ito K., Aoki T., Noah M., Yamamoto M.

    2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA)     2019

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    Authorship:Last author   Language:English  

    Web of Science

  38. Effects of Secondary Leakage Inductance on the LLC Resonant Converter-Part II: Frequency Control Bandwidth with respect to Load Variation

    Noah Mostafa, Shirakawa Tomohide, Umetani Kazuhiro, Imaoka Jun, Yamamoto Masayoshi, Hiraki Eiji

    THIRTY-FOURTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2019)     page: 1408 - 1414   2019

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  39. Effects of Secondary Leakage Inductance on the LLC Resonant Converter-Part I: Transformer Voltage Gain and Efficiency

    Noah Mostafa, Shirakawa Tomohide, Umetani Kazuhiro, Imaoka Jun, Yamamoto Masayoshi, Hiraki Eiji

    THIRTY-FOURTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2019)     page: 780 - 786   2019

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  40. Comprehensive Analysis of Coupled Inductors with Powder Cores Used in Interleaved Converter: Measurement, Modeling, Design Methods, and Experimental Evaluation

    Aoki Tatsuya, Imaoka Jun, Yamamoto Masayoshi, Yoshimoto Kosuke

    2019 IEEE 13TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS (PEDS)     2019

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    Language:English  

    Web of Science

  41. Effect of inductor parasitic resistances on the voltage gain of high step-up DC-DC converters for electric vehicle applications

    Martinez Wilmer, Cortes Camilo, Yamamoto Masayoshi, Imaoka Jun

    IET POWER ELECTRONICS   Vol. 11 ( 10 )   2018.8

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  42. Oscillation analysis and current peak reduction in paralleled SiC MOSFETs

    Nanamori Kimihiro, Sugihara Yusuke, Yamamoto Masayoshi

    IET CIRCUITS DEVICES & SYSTEMS   Vol. 12 ( 4 )   2018.7

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    Authorship:Last author   Language:English  

    DOI: 10.1049/iet-cds.2017.0255

    Web of Science

  43. Lagrangian dynamics model and practical implementation of an integrated transformer in multi-phase LLC resonant converter

    Noah Mostafa, Umetani Kazuhiro, Imaoka Jun, Yamamoto Masayoshi

    IET POWER ELECTRONICS   Vol. 11 ( 2 ) page: 339 - 347   2018.2

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    Authorship:Last author   Language:English  

    DOI: 10.1049/iet-pel.2017.0485

    Web of Science

  44. Winding orientation method to minimise the secondary leakage of a gapped transformer utilised in LLC resonant converter

    Noah M., Umetani K., Yamamoto M., Imaoka J.

    ELECTRONICS LETTERS   Vol. 54 ( 3 )   2018.2

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    Authorship:Last author   Language:English  

    DOI: 10.1049/el.2017.4013

    Web of Science

  45. A Novel Transformer Structure Used in a 1.4 MHz LLC Resonant Converter with GaNFETs

    Ou Tengfei, Noah Mostafa, Morita Koichi, Tsuruya Mamoru, Namiki Seiji, Imaoka Jun, Yamamoto Masayoshi

    2018 IEEE INTERNATIONAL POWER ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC)     page: 1562 - 1566   2018

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    Language:English  

    Web of Science

  46. Core Loss Evaluation in Powder Cores: A Comparative Comparison between Electrical and Calorimetric Methods

    Ishikura Yuki, Imaoka Jun, Noah Mostafa, Yamamoto Masayoshi

    2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA)     page: 1087 - 1094   2018

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    Authorship:Last author   Language:English  

    Web of Science

  47. Parasitic Inductance Design Considerations to Suppress Gate Voltage Oscillation of Fast Switching Power Semiconductor Devices

    Sugihara Yusuke, Nanamori Kimihiro, Yamamoto Masayoshi, Kanazawa Yasuki

    2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA)     page: 2789 - 2795   2018

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    Language:English  

    Web of Science

  48. Multiple Exciting Voltage Control for Maximization of Multi-hop Wireless Power Transfer Efficiency

    Sasaki Masato, Yamamoto Masayoshi

    2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA)     page: 3344 - 3348   2018

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    Authorship:Last author   Language:English  

    Web of Science

  49. Modeling, Magnetic Design, and Simulation Methods Considering DC Superimposition Characteristic of Powder Cores Used in Power Converters

    Imaoka Jun, Okamoto Kenkichiro, Shoyama Masahito, Ishikura Yuki, Noah Mostafa, Yamamoto Masayoshi

    2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA     page: 1095 - 1102   2018

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    Authorship:Last author   Language:English  

    Web of Science

  50. Magnetic Design and Experimental Evaluation of a Commercially Available Single Integrated Transformer in Three-Phase LLC Resonant Converter

    Noah Mostafa, Kimura Shota, Imaoka Jun, Martinez Wilmar, Endo Shun, Yamamoto Masayoshi, Umetani Kazuhiro

    IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS   Vol. 54 ( 6 ) page: 6190 - 6204   2018

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    Language:English  

    DOI: 10.1109/TIA.2018.2856631

    Web of Science

  51. Fundamental Experiment of 3-phase Electric Resonant Coupling Wireless Power Transfer

    Hattori Fumiya, Imaoka Jun, Yamamoto Masayoshi, Masuda Mitsuru

    2018 7TH INTERNATIONAL CONFERENCE ON RENEWABLE ENERGY RESEARCH AND APPLICATIONS (ICRERA)     page: 1417 - 1422   2018

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    Language:English  

    Web of Science

  52. Experimental Evaluation of Inverter System Consisting of 4-parallel GaN Devices Unit

    Ohnuma Yoshiya, Miyawaki Satoshi, Hattori Fumiya, Yamamoto Masayoshi

    2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA)     page: 2738 - 2742   2018

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    Authorship:Last author   Language:English  

    Web of Science

  53. Proposal for the New Control Method Having High Responsiveness and Robustness for the Boost-Type DC-DC Converter

    Kawakami Taichi, Harada Toshikazu, Yamamoto Masayoshi, Umetani Kazuhiro

    IEEJ Transactions on Electronics, Information and Systems   Vol. 138 ( 4 ) page: 395 - 404   2018

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    Language:Japanese   Publisher:The Institute of Electrical Engineers of Japan  

    <p>This paper proposes a novel control method to improve the responsiveness and the robustness of the boost DC-DC converter. The proposed control method is a feedback control incorporating a minor control that works to balance the input and output power. Experiment was carried out to verify the responsiveness and the robustness of the proposed control in comparison with the conventional voltage-mode and current-mode control. As a result, the proposed method revealed both of the fast response and the robust output voltage regulation against the load change.</p>

    DOI: 10.1541/ieejeiss.138.395

    CiNii Research

  54. Review of Current Balance Mechanism in Multiphase LLC Resonant Converters

    Noah Mostafa, Imaoka Jun, Ishikura Yuki, Umetani Kazuhiro, Yamamoto Masayoshi

    2018 IEEE 27TH INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE)     page: 1030 - 1036   2018

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    Language:Japanese  

    Web of Science

  55. Mathematical analysis of GaN high electron mobility transistor false turn-on phenomenon

    Iwaki T., Ishiwaki S., Sawada T., Yamamoto M.

    ELECTRONICS LETTERS   Vol. 53 ( 19 )   2017.9

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    Authorship:Last author   Language:English  

    DOI: 10.1049/el.2017.2225

    Web of Science

  56. A Lagrangian Dynamics Model of Integrated Transformer Incorporated in a Multi-phase LLC Resonant Converter

    Noah Mostafa, Umetani Kazuhiro, Endo Shun, Ishibashi Hiraki, Imaoka Jun, Yamamoto Masayoshi

    2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)     page: 3781 - 3787   2017

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    Language:English  

    Web of Science

  57. An Investigation into a Slight-Variation of the Transformer Effective Permeability in LLC Resonant Converter

    Noah Mostafa, Endo Shun, Kimura Shota, Yamamoto Masayoshi, Imaoka Jun, Umetani Kazuhiro, Hiraki Eiji

    2017 19TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'17 ECCE EUROPE     2017

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    Web of Science

  58. An Analysis of False Turn-On Phenomenon of GaN HEMT with Parasitic Components

    Iwaki Toshihiro, Ishiwaki Seiya, Sawada Takashi, Yamamoto Masayoshi

    2017 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC)     page: 347 - 350   2017

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    Web of Science

  59. Allowable Power Analysis and Comparison of High Power Density DC-DC Converters with Integrated Magnetic Components

    Kimura Shota, Nanamori Kimihiro, Kawakami Taichi, Imaoka Jun, Yamamoto Masayoshi

    IEEJ JOURNAL OF INDUSTRY APPLICATIONS   Vol. 6 ( 6 ) page: 463 - 472   2017

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    Authorship:Last author   Language:English  

    DOI: 10.1541/ieejjia.6.463

    Web of Science

  60. A Novel LLC Resonant DC-DC Converter with Integrated Transformer

    Kimura Shota, Nanamori Kimihiro, Noah Mostafa, Yamamoto Masayoshi

    2017 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC)     page: 506 - 510   2017

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    Web of Science

  61. An Mathematical Analysis of False Turn-On Phenomenon of GaN HEMT

    Iwaki Toshihiro, Sawada Takashi, Yamamoto Masayoshi

    2017 IEEE CPMT SYMPOSIUM JAPAN (ICSJ)     page: 189 - 190   2017

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    Web of Science

  62. Power Flow Interactive Sharing between Two DC Nanogrids Photovoltaic Local Branch Dynamic System at Island Operation

    Bauomy Maged F., Gamal Haytham, Shaltout Adel A., Noah Mostafa, Yamamoto Masayoshi

    2017 19TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'17 ECCE EUROPE)     2017

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    Web of Science

  63. Modeling and Design of Interleaved Multi-phase DC-DC Converter with 2-phase Coupled Inductor Cell for High Power Density

    Kimura Shota, Nanamori Kimihiro, Yamamoto Masayoshi

    2017 IEEE 6TH INTERNATIONAL CONFERENCE ON RENEWABLE ENERGY RESEARCH AND APPLICATIONS (ICRERA)     page: 416 - 422   2017

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    Authorship:Last author   Language:English  

    Web of Science

  64. Analytical Investigation on Design Instruction to Avoid Oscillatory False Triggering of Fast Switching SiC-MOSFETs

    Sugihara Yusuke, Nanamori Kimihiro, Ishiwaki Seiya, Hayashi Yuma, Aikawa Kyota, Umetani Kazuhiro, Hiraki Eiji, Yamamoto Masayoshi

    2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)     page: 5113 - 5118   2017

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    Authorship:Last author   Language:English  

    Web of Science

  65. Analytical Investigation of Interleaved DC-DC Converter using Closed-Coupled Inductor with Phase Drive Control

    Ebisumoto Daigoro, Kimura Shota, Nanamori Kimihiro, Noah Mostafa, Ishihara Masataka, Imaoka Jun, Yamamoto Masayoshi

    2017 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC)     page: 526 - 529   2017

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    Web of Science

  66. Analysis of False Turn-On Phenomenon of GaN HEMT with Parasitic Inductances for Propose Novel Design Method Focusing on Peak Gate Voltage

    Ishiwaki Seiya, Iwaki Toshihiro, Sugihara Yusuke, Nanamori Kimihiro, Yamamoto Masayoshi

    2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)     page: 1395 - 1401   2017

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    Web of Science

  67. Magnetic Structure of Close-Coupled Inductors to Improve the Thermal Handling Capability in Interleaved DC-DC Converter

    Chuong Thai Hoang, Kimura Shota, Ebisumoto Daigoro, Noah Mostafa, Ishihara Masataka, Yamamoto Masayoshi, Imaoka Jun, Martinez Wilmar

    2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)     page: 205 - 210   2017

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    Language:Japanese  

    Web of Science

  68. Analysis of Self Turn-ON Phenomenon for the Application of Power Semiconductor Devices

    Proceedings of Microelectronics Symposium   Vol. 27 ( 0 ) page: 15 - 16   2017

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    Language:Japanese   Publisher:The Japan Institute of Electronics Packaging  

    DOI: 10.11486/mes.27.0_15

    CiNii Research

▼display all

Books 13

  1. フォルクスワーゲン「ID.3」徹底分解

    山本真義( Role: Joint author)

    日経BP  2022.2 

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    Language:Japanese Book type:Textbook, survey, introduction

  2. パワー半導体SiC/GaNの課題... 高速スイッチングによるサージと 対策回路への研究

    山本真義( Role: Joint author)

    CQ出版株式会社  2022.2 

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    Language:Japanese Book type:Textbook, survey, introduction

  3. 電動車向け次世代パワー半導体の最新動向と今後の予測

    山本真義( Role: Joint author)

    技術情報協会  2022.2 

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    Language:Japanese Book type:Textbook, survey, introduction

  4. 次世代EV/HEV用モータの高出力化と関連材料の開発

    山本真義( Role: Joint author)

    技術情報協会  2022.1 

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    Language:Japanese Book type:Textbook, survey, introduction

  5. 次世代パワー半導体の開発動向と応用展開EV・HEV用モータと、高出力化に向けた関連材料の開発

    山本真義( Role: Joint author)

    技術情報協会  2021.12 

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    Language:Japanese Book type:Textbook, survey, introduction

  6. テクノロジー・ロードマップ 2022-2031 全産業編

    山本真義( Role: Joint author)

    日経BP  2021.11 

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    Language:Japanese

  7. JRCM NEWS

    山本真義( Role: Joint author)

    一般財団法人 金属材料研究開発センター  2021.8 

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    Total pages:6   Responsible for pages:1   Language:Japanese

  8. 次世代ジェット旅客機

    山本真義( Role: Sole author)

    日刊興業新聞  2021.5 

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    Total pages:28   Responsible for pages:1   Language:Japanese

  9. 自動車電動化の潮流

    山本真義( Role: Sole author)

    日刊工業新聞  2021.2 

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    Total pages:36   Responsible for pages:1   Language:Japanese

  10. 次世代パワー半導体の開発と空飛ぶクルマへの適用

    山本真義( Role: Sole author)

    空飛ぶクルマ  2020.10 

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    Total pages:350   Responsible for pages:20   Language:Japanese

  11. xEV における SiC/GaN 応用パワーエレクトロニクスの EMC 対策技術

    山本真義( Role: Sole author)

    月刊 車載テクノロジー  2020.9 

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    Total pages:500   Responsible for pages:6   Language:Japanese Book type:Textbook, survey, introduction

  12. 超高速GaNパワー半導体応用におけるノイズ発生 メカニズムと高速スイッチングに起因するノイズの効果的な抑制法

    山本真義( Role: Sole author)

    工業材料  2020.9 

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    Total pages:450   Responsible for pages:7   Language:Japanese Book type:Textbook, survey, introduction

  13. 次世代自動車用パワー半導体と周辺機器・部材の分解解説と技術動向

    山本真義( Role: Sole author)

    クリーンテクノロジー  2020.9 

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    Total pages:450   Responsible for pages:7   Book type:Textbook, survey, introduction

▼display all

Presentations 47

  1. 日米欧中の電気自動車(EV)戦略と2030年の電気自動車予想像 Invited

    山本真義

    弁理士会講演会  2022.2.19  弁理士会

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    Event date: 2022.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  2. 航空機電動化に向けた高電力密度インバータ設計手法の各リスト実証 Invited

    山本真義

    知の拠点あいち公開セミナー  2022.2.17  知の拠点重点研究プロジェクト統括部

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    Event date: 2022.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  3. 2030年の次世代自動車像とそれを支える電動化テクノロジー

    山本真義

    第4回未来のクルマTechnology  2022.2.16  株式会社JTBコミュニケーションデザイン

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    Event date: 2022.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  4. 宏光MINI EV(中国・五菱)の分解解説ならびに2030年の電気自動車予想像と広島県自動車関連企業の執るべき戦略 Invited

    山本真義

    広島市ものづくり支援化  2022.2.1  広島市 経済観光局産業振興部

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    Event date: 2022.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  5. 日米欧中の電気自動車(EV)戦略と各自動車メーカが求めるEV用材料・素材・パワーエレクトロニクス応用技術最前線 Invited

    山本真義

    山口県産業戦略部オンラインセミナー  2022.1.20  山口県 産業戦略部

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    Event date: 2022.1

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  6. 宏光MINI EVセミナー

    山本真義

    宏光MINI EVセミナー  2021.12.14  一般社団法人日本能率協会

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    Event date: 2021.12

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:愛知県名古屋市   Country:Japan  

  7. 次世代自動車2030年ロードマップとそれを支える次世代パワー半導体実装基板技術 Invited

    山本真義

    IMSIオープンフォーラム2021  2021.12.9  一般社団法人電子実装工学研究所

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    Event date: 2021.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  8. Next Generation Electric Vehicle in 2030 and Module Packaging and Bonding of Next Generation Power Semiconductor Device for Its Automotive Applications Invited International conference

    2021.12.9 

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    Event date: 2021.12

    Language:English   Presentation type:Oral presentation (keynote)  

    Country:Japan  

  9. 車載用パワーエレクトロニクス技術最新動向とSiC/GaN適用の事例と可能性に関する議論 Invited

    山本真義

    NEDIAパワーエレクトロニクス講座  2021.12.3  財団法人 日本電子デバイス産業協会

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    Event date: 2021.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  10. 宏光MINI EVセミナー

    山本真義

    宏光MINI EVセミナー  2021.11.30  一般社団法人日本能率協会

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    Event date: 2021.11

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:愛知県名古屋市   Country:Japan  

  11. 主要国における電気自動車の開発動向と我が国が執るべき カーボンニュートラルに向けた電気自動車の市場戦略 Invited

    山本真義

    パワーエレクトロニクス学会  2021.11.20  パワーエレクトロニクス学会

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    Event date: 2021.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  12. 電動車・パワコン・家電民生機器におけるECM対策技術最前線と各応用パワーエレクトロニクス機器分解解説 〜テスラ・モデル3、ジャガー・I-Pace、ポルシェ・タイカン、ファーウェイ製パワコンを中心に〜 Invited

    山本真義

    テクノフェア  2021.11.15  北川工業

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    Event date: 2021.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  13. 日米欧中の電気自動車(EV)戦略と2030年の電気自動車予想像 Invited

    山本真義

    日本弁理士会講演会  2021.11.12  日本弁理士会

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    Event date: 2021.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  14. EV用パワーエレクトロニクス機器の最新技術・市場動向と次世代EVに求められるパワエレ実装技術 Invited

    山本真義

    福岡大学半導体実装研究所講演会  2021.11.11  福岡大学

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    Event date: 2021.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:福岡県福岡市   Country:Japan  

  15. SiC/GaN Hybrid Soft Switching Inverter for Electric Vehicle Applications International conference

    2021.11.6 

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    Event date: 2021.11

    Language:English   Presentation type:Oral presentation (keynote)  

    Country:Japan  

  16. EV用車載パワーエレクトロニクスシステム最新動向と次世代EVに求められるパワエレ実装技術 Invited

    山本真義

    電子機器のトータルソリューション展  2021.10.28  日本貿易振興機構

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    Event date: 2021.10

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:東京ビッグサイト   Country:Japan  

  17. 日米欧中の電気自動車(EV戦略と各自動車メーカのEV用パワーエレクトロニクス応用技術最前線 Invited

    山本真義

    日本弁理士会講演会  2021.10.21  日本弁理士会講演会

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    Event date: 2021.10

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  18. 世界標準化される電気自動車用パワーエレクトロニクスの技術動向と車載用磁性材料へ の期待に関する講演)

    山本真義

    日本ボンド磁性材料協会(JABM)講演会  2021.9.17  日本ボンド磁性材料協会

     More details

    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  19. EV用車載パワーエレクトロニクスシステム最新動向と次世代EVに求められるパワエレ実装技術 Invited

    山本真義

    カーエレクトロニクス研究会  2021.9.15  エレクトロニクス実装学会 

     More details

    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  20. 日米欧中のEV用パワー半導体戦略と各自動車メーカの EV用パワーエレクトロニクス応用技術最前線 Invited

    山本真義

    NE先端テクノロジーフォーラム  2021.9.10  日経エレクトロニクス

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  21. パワーコントロールユニット(PCU)における高出力密度を実現する各要素技術と動向 Invited

    山本真義

    産業応用部門大会シンポジウムセッション講演  2021.8.27  電気学会

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    Event date: 2021.8

    Language:Japanese   Presentation type:Oral presentation (keynote)  

    Venue:オンライン   Country:Japan  

  22. 超高速GaNパワー半導体応用におけるノイズ発生メカニズムと 高速スイッチングに起因するノイズの効果的な抑制法 Invited

    山本真義

    応用物理学会 先進パワー半導体分科会  2021.7.30  応用物理学会

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    Event date: 2021.7

    Language:Japanese  

    Venue:名古屋大学   Country:Japan  

  23. 次世代自動車におけるパワーエレクトロニクス機器の1kV化技術動向とそこに求められるワイドバンドギャップパワー半導体応用技術

    山本真義

    ワイドバンドギャップ学会講演会  2021.7.16  ワイドギャップ半導体学会研究会

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    Event date: 2021.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  24. 次世代自動車に要求されるSiC/GaNパワーデバイス実装・接合技術と欧米メーカ(テスラ・ジャガー等)のインバータ実装技術紹介 Invited

    山本真義

    日本溶接協会はんだ・微細接合部会シンポジウム  2021.7.5  日本溶接協会

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    Event date: 2021.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  25. I-Pace(ジャガー)用インバータの概要と実装手法

    山本真義

    テクノフロンティアセミナー  2021.7.1  一般社団法人日本能率協会

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    Event date: 2021.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  26. 北米・欧州・日本の各EV分解から読み解くパワー半導体とそのモジュール・システム 技術最新動向とパワー半導体応用設計思想 Invited

    山本真義

    パワーデバイス用シリコン および関連半導体材料に関する研究会  2021.6.24  一般財団法人ファインセラミックスセンター

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    Event date: 2021.6

    Language:Japanese   Presentation type:Oral presentation (keynote)  

    Venue:オンライン  

  27. 3 I-PACE(ジャガー)・モデル3(テスラ)のインバータ分解から読み解く 車載用熱対策技術最前線とその技術動向 Invited

    山本真義

    テクノフロンティアセミナー  2021.6.10  一般社団法人日本能率協会

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    Event date: 2021.6 - 2021.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  28. 各自動車メーカ最新モデル分解から読み解く車載用パワーエレクトロニクス技術 最前線 ~I-PACE(ジャガー)・モデル3(テスラ)・MIRAI(トヨタ)~ Invited

    山本真義

    テクノフロンティアセミナー  2021.6.18  一般社団法人日本能率協会 

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    Event date: 2021.6 - 2021.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  29. モデル3(テスラ)用SiCバッテリ充電器における 最新ノイズ対策技術とSiC/GaN時代のノイズ対策技術動向 Invited

    山本真義

    テクノフロンティアセミナー  2021.7.7  一般社団法人日本能率協会

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    Event date: 2021.6 - 2021.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  30. 電気自動車向けパワーエレクトロニクス機器の各国における研究開発状況と今後の技術動向 Invited International coauthorship International conference

    山本真義

    日本電気学会:岩崎コンファレンス  2021.5.20  日本電気学会

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    Event date: 2021.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  31. EVにおけるPCU及びパワーモジュールの実装・組立技術の開発動向

    山本真義

    ジャパンマーケティングサーベイ  2021.3.30  ジャパンマーケティングサーベイ

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    Event date: 2021.3

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

  32. 名古屋大学におけるGan半導体による電力変換等の研究について

    山本真義

    電源部品事業委員会 JEITA  2021.3.23  電子情報技術産業協会

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    Event date: 2021.3

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

  33. MHzワイヤレス給電を実現する高周波パワー半導体スイッチング技術とその応用事例

    山本真義

    WPT研究会  2021.3.22  WPTシステム研究会

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    Event date: 2021.3

    Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  34. 先進モビリティとパワーエレクトロ二クス技術の進化 Invited

    山本真義

    応用物理学会春季学術講演会  2021.3.17  応用物理学会

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  35. 航空機電動化に向けた高電力密度インバータ設計手法の確立と実証

    山本真義

    知の拠点公開セミナー  2021.3.15  知の拠点あいち

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    Event date: 2021.3

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:愛知県長久手市 知の拠点あいち   Country:Japan  

  36. Teslaモデル3分解から読み解く車載応用における技術トレンド Invited

    山本真義

    自動車問題研究会   2021.2.16  自動車問題研究会

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    Event date: 2021.2

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:愛知県名古屋市 フォーイン2階多目的ホール   Country:Japan  

  37. 電動車両技術の最新動向

    山本真義

    自動車技術会シンポジウム  2021.2.12  自動車技術会電気動力技術部門委員会

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    Event date: 2021.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  38. 次世代パワーエレクトロニクスを革新する高周波・大容量対応パワーマグネティックス応用技術 〜次世代自動車用磁気部品応用技術を例に〜

    山本真義

    マグネティックスによるパワーエレクトロニクスの革新と協創  2021.1.20  電気学会マグネティックス技術委員会

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    Event date: 2021.1

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  39. 次世代パワー半導体が切り開くモビリティ・インフラ用電力機器の将来と市場可能性

    山本真義

    オンライン  2020.12.18  中部電力

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    Event date: 2020.12

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

  40. 次世代バワー半導体の開発と空飛ぶクルマへの適用

    山本真義

    テクノフロンティアセミナー  2020.12.3  産業能率協会

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    Event date: 2020.12

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

  41. パワエレ技術の最新動向

    山本真義

    愛知県モノづくり技術者のための パワエレセミナー  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

  42. 自動車におけるパワーエレクトロ二クス技術が果たす役割と展望 Invited

    山本真義

    応用物理学会  2020.11.28  応用物理学会

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン   Country:Japan  

  43. テスラ・モデル3の分解から読み解くテスラモーターズ社が考えるパワー半導体応用戦略とそこから予測する次世代自動車像

    山本真義

    電動車両のPCUの高性能化に関する共同研究委員会  2020.11.13  電動車両のPCUの高性能化に関する共同研究委員会

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

  44. テスラ・モデル3分解から読み解くパワー半導体応用戦略とそこから予測する次世代自動車

    山本真義

    EVEX EV-PHV普及活用技術展  2020.11.6  エヌプラス

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    Event date: 2020.11

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:東京都   Country:Japan  

  45. 車載応用におけるパワー半導体の熱設計・信頼性技術最前線~テスラ・モデル3分解~読み解くパワー半導体パッケージ戦力~

    山本真義

    ネプコンジャパン  2020.10.22  リードエグジビションジャパン

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    Event date: 2020.10

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:愛知県名古屋市   Country:Japan  

  46. テスラ「モデル3」徹底分解セミナー ~分解したらここまで分かる、テスラが示す未来のクルマ~

    山本真義

    日経BP講演会 テスラ分解  2020.9.18  日経BP

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    Event date: 2020.9

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

  47. 航空機電動化

    山本真義

    ÉCLAIRコンソーシアム  2020.9.14  JAXA

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    Event date: 2020.9

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:オンライン   Country:Japan  

▼display all

Other research activities 1

  1. ⾮接触受電装置および⾮接触給電システム

    2020.10

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    特許出願 特願2021- 19679
    発明者 大矢根 蒼、山本 真義

Research Project for Joint Research, Competitive Funding, etc. 27

  1. ウイルス不活化機能をもつ個人装用型送気服および送気フェイスシールド

    2021.4 - 2022.4

    受託研究費

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\3600000 ( Direct Cost: \3600000 )

  2. GaNパワーデバイス 革新的な省CO2実現のための部材や素材の社会実装・普及展開加速化事業

    2020.10 - 2022.3

    山本真義

      More details

    Authorship:Coinvestigator(s)  Grant type:Competitive

    Grant amount:\29952000 ( Direct Cost: \26133000 、 Indirect Cost:\3819000 )

  3. 低CO2エミッション航空機実現に向けた推進用高出力密度電気モータシステムの研究開発

    2019.11 - 2021.7

    受託研究費

    山本真義

      More details

    Grant type:Competitive

    Grant amount:\17270000 ( Direct Cost: \13387000 、 Indirect Cost:\733000 )

  4. 未来のあるべき社会・ライフスタイルを創造する技術イノベーション事業

    2019.4 - 2022.3

    受託共同研究費

    山本真義

      More details

    Authorship:Coinvestigator(s)  Grant type:Competitive

    Grant amount:\36922000 ( Direct Cost: \34459000 、 Indirect Cost:\2463000 )

  5. 高速スイッチング回路基盤技術の開発

    2018.11 - 2022.3

    受託研究費

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\81975000 ( Direct Cost: \74019000 、 Indirect Cost:\7956000 )

  6. 車両向けパワーエレクトロニクス技術の伝授

    2022.1 - 2023.3

    受託事業費

    山本真義

      More details

    Grant type:Collaborative (industry/university)

    Grant amount:\1346000

  7. 車載向け高周波 絶縁インダクタの研究

    2021.11 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator 

    Grant amount:\3261000 ( Direct Cost: \3076000 、 Indirect Cost:\185000 )

  8. 次世代LED用電源技術の共同研究

    2021.11 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator 

    Grant amount:\2120000 ( Direct Cost: \2000000 、 Indirect Cost:\120000 )

  9. 長距離・大電力のワイヤレス電力伝送技術の研究

    2021.10 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator 

    Grant amount:\1166000 ( Direct Cost: \1100000 、 Indirect Cost:\66000 )

  10. SiCを適用した昇圧DC/DCコンバータのノイズ対策技術の研究

    2021.4 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator 

    Grant amount:\2120000 ( Direct Cost: \2000000 、 Indirect Cost:\120000 )

  11. 電磁波制御技術に関する研究

    2021.4 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Other

    Grant amount:\2077000 ( Direct Cost: \1966000 、 Indirect Cost:\111000 )

  12. パワーエレクトロニクス技術、パワーコンディショナー及び交流

    2020.11 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator 

    Grant amount:\385000 ( Direct Cost: \385000 )

  13. ツイスト熱電対のノイズ対策についての研究

    2020.10 - 2022.3

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Collaborative (industry/university)

    Grant amount:\814000 ( Direct Cost: \800000 、 Indirect Cost:\14000 )

  14. 次世代自動車電動部品向け新規高機能性薄物シート連続製造技術

    2020.8 - 2022.3

    補助金等

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Other

    Grant amount:\1321000 ( Direct Cost: \1321000 )

  15. ワイドバンドギャップ半導体を用いた電動システムにおけるノイズ対策の研究

    2020.6 - 2021.12

    共同研究

    山本真義

      More details

    Grant type:Other

    Grant amount:\6997000 ( Direct Cost: \6703000 、 Indirect Cost:\294000 )

  16. インバータ回路におけるシャント抵抗を用いたソフトスイッチング

    2020.6 - 2021.3

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Other

    Grant amount:\1338000 ( Direct Cost: \1269000 、 Indirect Cost:\69000 )

  17. GaNを適用したLLC共振絶縁DC/DCコンバータのノイズ対策技術の研究

    2020.5 - 2021.3

    山本真義

      More details

    Grant type:Other

    Grant amount:\1607000 ( Direct Cost: \1538000 、 Indirect Cost:\69000 )

  18. 航空機電動化に向けた高電力密度インバータ設計手法の確立と実証

    2020.4 - 2022.3

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\21994000 ( Direct Cost: \21271000 、 Indirect Cost:\599000 )

  19. ブラシモータ装置の電磁ノイズ解析技術

    2020.4 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Other

    Grant amount:\1630000 ( Direct Cost: \1538000 、 Indirect Cost:\92000 )

  20. 省エネルギー社会の実現に資する次世代半導体研究開発

    2020.4 - 2021.3

    山本真義

      More details

    Grant amount:\52250000 ( Direct Cost: \50000000 、 Indirect Cost:\2250000 )

  21. 小型・軽量・高効率・低EMC電源を実現する電源基板設計技術

    2020.2 - 2021.3

    山本真義

      More details

    Grant type:Other

    Grant amount:\124000 ( Direct Cost: \113000 、 Indirect Cost:\11000 )

  22. エネルギーマネジメント展開に関する共同研究

    2019.4

    山本真義

      More details

    Grant type:Collaborative (industry/university)

    Grant amount:\256000 ( Direct Cost: \256000 )

  23. 次世代自動車の車内快適性に関する包括的共同研究

    2019.4 - 2021.3

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Collaborative (industry/university)

    Grant amount:\100000 ( Direct Cost: \100000 )

  24. GaNパワーエレクトロニクスに関する研究

    2018.10 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\800000 ( Direct Cost: \614000 、 Indirect Cost:\186000 )

  25. GaNパワーエレクトロニクスに関する研究

    2018.10 - 2021.3

    山本真義

      More details

    Grant type:Other

    Grant amount:\815000 ( Direct Cost: \769000 、 Indirect Cost:\46000 )

  26. 高出力インバータ回路の開発

    2018.4 - 2021.3

    山本真義

      More details

    Grant amount:\804000 ( Direct Cost: \769000 、 Indirect Cost:\35000 )

  27. 新磁性材料インダクタコアの応用検討

    2017.10 - 2022.3

    共同研究

    山本真義

      More details

    Authorship:Principal investigator  Grant type:Other

    Grant amount:\2341000 ( Direct Cost: \2112000 、 Indirect Cost:\229000 )

▼display all

KAKENHI (Grants-in-Aid for Scientific Research) 1

  1. トンネル用LED照明装置

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    Grant type:Competitive

    トンネル用LED照明装置の高効率化、低ノイズ化を実現する

 

Teaching Experience (On-campus) 11

  1. Electric Circuits with Exercises

    2020

  2. Advanced Experiments and Exercises in Electric Engineering

    2020

  3. Advanced Lectures on Power Electronics Applications

    2020

  4. Power Electronics Seminar 1D

    2020

  5. Power Electronics Seminar 1C

    2020

  6. Power Electronics Seminar 2E

    2020

  7. Power Electronics Seminar 2C

    2020

  8. Power Electronics Seminar 2B

    2020

  9. Power Electronics Seminar 2A

    2020

  10. Power Electronics

    2020

  11. power Electronics

    2020

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Teaching Experience (Off-campus) 1

  1. 特別講義 2030年の次世代電気自動車像とそこで使われるパワーエレクトロニクス応用技術最前線

    2021.12 Okayama University)

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    Level:Undergraduate (specialized)  Country:Japan

 

Social Contribution 3

  1. 2030年の自動車像を予測する ~電気自動車の世界市場展開と新材料半導体~

    Role(s):Lecturer

    名古屋大学  サイエンスフェスティバル2021  2021.11

  2. 次世代パワー半導体が切り開く次世代自動車・航空機・宇宙探査機の世界

    Role(s):Lecturer

    名古屋大学  アカデミックナイト  2020.11

  3. 電気は空へ~電動バイクや電動航空機、宇宙用ロケットや月面探査車の最前線~

    Role(s):Lecturer

    名古屋大学  サイエンスフェスティバル2020  2020.9

Media Coverage 12

  1. フォルクスワーゲン「ID.3」徹底分解 Newspaper, magazine

    日経BP  2022.2

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    Author:Myself 

  2. パワー半導体の高性能化と小型化で、EVの航続距離を伸ばすことができる

    読売新聞  2022.2

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    Author:Myself 

  3. パワー半導体SiC/GaNの課題... 高速スイッチングによるサージと 対策回路への研究 Newspaper, magazine

    CQ出版株式会社  トランジスタ技術 2月号  2022.2

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    Author:Myself 

  4. 次世代EV/HEV用モータの高出力化と関連材料の開発 Newspaper, magazine

    株式会社技術情報協会  2022.1

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    Author:Myself 

  5. 中国の「50万円EV」を分解  機能割り切り格安を実現 Newspaper, magazine

    日本経済新聞  2021.12

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    Author:Myself 

  6. 次世代パワー半導体の開発動向と応用展開EV・HEV用モータと、高出力化に向けた関連材料の開発

    株式会社エヌ・ティー・エス  2021.12

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    Author:Myself 

  7. 次世代自動車2030年ロードマップ Newspaper, magazine

    電波新聞  2021.11

  8. 日本の鉄は赤船に乗るか? ~中国48万円EVの衝撃~ Promotional material

    JRCM NEWS  2021.8

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    Author:Myself 

  9. 航空機産業を支える実力企業 Newspaper, magazine

    日刊工業新聞  2021.5

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    Author:Myself 

  10. MIRAIのみらい TV or radio program

    ZIP-FM  STORY OF MOBILITY  2021.3

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    Author:Myself 

  11. 自動車電動化の潮流 Newspaper, magazine

    日刊工業新聞  2021.2

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    Author:Myself 

  12. 半導体産業EVに不可欠なパワーデバイスの 現状と将来 Newspaper, magazine

    日刊工業新聞  2021.2

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    Author:Myself 

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