Organization
Faculty of Environmental, Life, Natural Science and Technology Assistant Professor
Position
Assistant Professor
External link
Ishihara Masataka
Degree
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Ph.D. degree in electrical engineering ( 2021.3 Okayama University )
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M.S. degree in electrical engineering ( 2017.3 Shimane University )
Research Areas
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Power engineering / パワーエレクトロニクス
Papers
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Effectiveness Study of Streamlined Fin with Low-Pressure Loss to Improve Heat Dissipation Performance of Heat Sink
Hiroki Seto, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki
INTELEC, International Telecommunications Energy Conference (Proceedings) 2024
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GaN-HEMT Power Module of Aluminum-Clad Printed Circuit Boards for Small Power Loop Inductance and High Cooling Performance
Kazuhiro Umetani, Yu Takehara, Masataka Ishihara, Eiji Hiraki
IEEE Transactions on Power Electronics 39 ( 10 ) 12047 - 12052 2024
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Non-Isolated Interleaved High Step-Down DC-DC Converter with Reduced Switched Capacitor Stages and Automatic Current Sharing
Kazuhiro Umetani, Fumie Ishitani, Taira Shirahase, Masataka Ishihara, Eiji Hiraki
INTELEC, International Telecommunications Energy Conference (Proceedings) 2024
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Compact Hardware Implementation of Power Factor Control for LLC converter with Event-Driven-Timer Based Digital Controller
Toshiyuki Zaitsu, Yuto Yoshimura, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki, Kazuhiro Horii
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC 2015 - 2020 2024
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Feasibility of Active Reactance Compensator for Autonomously Maximizing Repeater Coil Current of Wireless Power Transfer System Against Variations in Resonant Frequency and Magnetic Coupling Intensity
Masataka Ishihara, Kazuhiro Umetani, Akihiro Konishi, Eiji Hiraki
IEEE Access 12 98175 - 98188 2024
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Parasitic Inductance Network Modeling Method for Power Module Inner Wirings Based on Inductance Matrix Measurement
Kotaro Kobashi, Kazuhiro Umetani, Masataka Ishihara, Hiroto Sakai, Yuta Okawauchi, Takuto Hayashi, Eiji Hiraki
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC 2530 - 2536 2024
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Design of Embedded Experiments in Power Electronics Class
Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki
2023 IEEE 10th International Conference on E-Learning in Industrial Electronics, ICELIE 2023 2023
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Artificial-Voice-Based Conversational Lecture Video Clips for Flipped Classroom.
Kazuhiro Umetani, Yoshitaka Toyota, Masataka Ishihara, Eiji Hiraki
ISIE 1 - 7 2023
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Rectifier-Integrated Printed-Circuit-Board Winding Structure of Secondary-Side Center-Tapped Transformer for Suppressing Parasitic Resonance between Decoupling Capacitors
Hiromu Saeki, Kazuhiro Umetani, Tomohide Shirakawa, Masataka Ishihara, Eiji Hiraki
ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics 1731 - 1737 2023
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Introduction of Circuit Simulator to Power Electronics Education in Interdisciplinary Educational Environment
Eiji Hiraki, Masataka Ishihara, Kazuhiro Umetani
2023 IEEE 10th International Conference on E-Learning in Industrial Electronics, ICELIE 2023 2023
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Autonomous Resonant Frequency Tuner for a 6.78 MHz Inductive Coupling Wireless Power Transfer System to Stably Maximize Repeater Current
Akihiro Konishi, Kazuhiro Umetani, Member Masataka Ishihara, Eiji Hiraki
IEEJ Journal of Industry Applications 12 ( 2 ) 215 - 227 2023
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Power Loop Inductance Optimization Strategy for Eliminating Turn-off Switching Surge for GaN-HEMT Switching Device
Kazuhiro Umetani, Kento Tanohara, Koki Abe, Masataka Ishihara, Eiji Hiraki
2023 25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe 2023
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Suppression Strategy for Oscillatory False Triggering Between Two paralleled GaN-HEMTs Based on Optimization of Parasitic Inductance
Ryoma Yoshida, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki
2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 5406 - 5413 2023
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GaN-HEMT Power Module Structure with Single-sided and Double-sided Aluminum-Clad Printed-Circuit Boards for Small Power Loop Inductance and High Cooling Performance
Kazuhiro Umetani, Yu Takehara, Masataka Ishihara, Eiji Hiraki
2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 5531 - 5537 2023
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Origin of Common Source Inductance in Power Device Packages with Kelvin Source Terminal
Kotaro Kobashi, Akihiro Konishi, Kazuhiro Umetani, Masataka Ishihara, Takuto Hayashi, Eiji Hiraki
2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 5510 - 5516 2023
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Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki
2022 IEEE 9th International Conference on e-Learning in Industrial Electronics (ICELIE) 2022.10
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Eiji Hiraki, Masataka Ishihara, Kazuhiro Umetani
2022 IEEE 9th International Conference on e-Learning in Industrial Electronics (ICELIE) 2022.10
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Masataka Ishihara, Kodai Matsuura, Akihiro Konishi, Kazuhiro Umetani, Eiji Hiraki
2022 IEEE Energy Conversion Congress and Exposition (ECCE) 2022.10
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Shota Kawahara, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki
2022 IEEE Energy Conversion Congress and Exposition (ECCE) 2022.10
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Secondary-Side Resonating LLC Converter for Reducing Transformer Voltage in High Power Applications
Hayato Nakamura, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki
2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia 547 - 554 2022
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High-Efficiency Solenoid Coil Structure for Induction Heating of Cylindrical Heating Object
Daiki Miyake, Kazuhiro Umetani, Shota Kawahara, Masataka Ishihara, Eiji Hiraki
IEEE International Symposium on Industrial Electronics 2022-June 307 - 313 2022
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Phase-Shift Based on Power Factor Control for LLC Converter with High Output Stability Against Load Fluctuation
Kenta Yamada, Kazuhiro Umetani, Eiji Hiraki, Masataka Ishihara
2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022 2022
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A Secondary-Side Resonant LLC converter for Reducing Resonance Voltage with Boost Mode Operation Using Resonance Including Current Doubler Rectifier
Hayato Nakamura, Naoyuki Yokoshima, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki, Tatsuya Miyazaki, Yuta Okawauchi, Ken Nakahara
2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022 2022
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Sinusoidal-Flux Reluctance Machine Driven with Three-Phase Inverter for Improving Power Density with Reduced Torque and Input Current Ripples
Masaki Iida, Kazuhiro Umetani, Takayuki Kusumi, Masataka Ishihara, Eiji Hiraki
2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe 2021.9
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Autonomous System Concept of Multiple-Receiver Inductive Coupling Wireless Power Transfer for Output Power Stabilization Against Cross-Interference Among Receivers and Resonance Frequency Tolerance
Masataka Ishihara, Keita Fujiki, Kazuhiro Umetani, Eiiji Hiraki
IEEE Transactions on Industry Applications 57 ( 4 ) 3898 - 3910 2021.7
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Yusuke Hatakenaka, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki, Hiroshi Tadano
IECON Proceedings (Industrial Electronics Conference) 2021-October 1 - 8 2021
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Tiny Approaches to the Interactive Online Lectures Under the COVID-19 Pandemic.
Eiji Hiraki, Masataka Ishihara, Kazuhiro Umetani
IECON Proceedings (Industrial Electronics Conference) 2021-October 1 - 4 2021
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Koki Abe, Masataka Ishihara, Yusuke Hatakenaka, Kazuhiro Umetani, Eiji Hiraki
IEEE International Symposium on Industrial Electronics 2021-June 1 - 5 2021
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Akihiro Konishi, Kazuhiro Umetani, Masataka Ishihara, Eiii Hiraki
IEEE International Symposium on Industrial Electronics 2021-June 1 - 8 2021
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Multiple-Transmitter with Phase-Shift and Dynamic ZVS Angle Controls at Fixed Operating Frequency for Cross-Interference Free Wireless Power Transfer Systems
Kodai Matsuura, Masataka Ishihara, Akihiro Konishi, Kazuhiro Umetani, Eiji Hiraki
2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 5767 - 5774 2021
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A Control Method Based on Power Factor for Improving Output Voltage Stability and Efficiency of LLC Converter in Wide Range of Output Voltage and Load Impedance
Kazuhiro Umetani, Kota Shimomura, Kenta Yamada, Taichi Kawakami, Masataka Ishihara, Eiji Hiraki
2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3436 - 3443 2021
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Strategy of Topology Selection Based on Quasi-Duality Between Series–Series and Series–Parallel Topologies of Resonant Inductive Coupling Wireless Power Transfer Systems
Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki
IEEE Transactions on Power Electronics 35 ( 7 ) 6785 - 6798 2020.7
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Optimization of Common Source Inductance and Gate-Drain Capacitance for Reducing Gate Voltage Fluctuation after Turn-off Transition
Yusuke Hatakenaka, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki
2020 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3155 - 3162 2020
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Multiple-Transmitter Achieving Load-Independent Transmitter Current and Compensation of Cross-Interference Among Transmitters for Wide Charging Area Wireless Power Transfer Systems
Kodai Matsuura, Masataka Ishihara, Akihiro Konishi, Kazuhiro Umetani, Eiji Hiraki
2020 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 5474 - 5481 2020
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Receiving-coil structure reducing stray AC resistance for resonant coupling wireless power transfer
Kazuhiro Umetani, Toru Honjo, Takahiro Koyama, Masataka Ishihara, Eiji Hiraki
IET POWER ELECTRONICS 12 ( 9 ) 2338 - 2344 2019.8
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Automatic Active Compensation Method of Cross-Coupling in Multiple-receiver Resonant Inductive Coupling Wireless Power Transfer Systems
Masataka Ishihara, Keita Fujiki, Kazuhiro Umetani, Eiji Hiraki
2019 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 4584 - 4591 2019
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Experimental Verification of Impedance Matching Method for Repeater to Improve Spatial Freedom of 6.78 MHz Resonant Inductive Coupling Wireless Power Transfer Systems
Keita Fujiki, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki
2019 21ST EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE '19 ECCE EUROPE) 2019
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Impedance Matching to Maximize Induced Current in Repeater of Resonant Inductive Coupling Wireless Power Transfer Systems
Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki
2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 6194 - 6201 2018
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Automatic Resonance Frequency Tuning Method for Repeater in Resonant Inductive Coupling Wireless Power Transfer Systems
Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki
2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA) 1610 - 1616 2018
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Improving Robustness Against Variation in Resonance Frequency for Repeater of Resonant Inductive Coupling Wireless Power Transfer Systems
Masataka Ishihara, Shoma Ohata, Keita Fujiki, Kazuhiro Umetani, Eiji Hiraki
2018 20TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'18 ECCE EUROPE) 2018
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Magnetic Structure of Close-Coupled Inductors to Improve the Thermal Handling Capability in Interleaved DC-DC Converter
Thai Hoang Chuong, Shota Kimura, Daigoro Ebisumoto, Mostafa Noah, Masataka Ishihara, Masayoshi Yamamoto, Jun Imaoka, Wilmar Martinez
2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2017-January 205 - 210 2017
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Elucidation of Quasi-Duality between Series-Series and Series-Parallel Topologies of Resonant Inductive Coupling Wireless Power Transfer Systems
Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki
2017 IEEE 12TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS (PEDS) 2017-December 674 - 679 2017
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Analytical Investigation of Interleaved DC-DC Converter using Closed-Coupled Inductor with Phase Drive Control
Daigoro Ebisumoto, Shota Kimura, Kimihiro Nanamori, Mostafa Noah, Masataka Ishihara, Jun Imaoka, Masayoshi Yamamoto
2017 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC) 2017-October 526 - 529 2017
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Simple Self-Driven Synchronous Rectifier for Resonant Inductive Coupling Wireless Power Transfer
Takahiro Koyama, Toru Honjo, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki
2017 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC) 2017-October 363 - 368 2017
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Quasi-duality between SS and SP topologies of basic electric-field coupling wireless power transfer system
M. Ishihara, K. Umetani, H. Umegami, E. Hiraki, M. Yamamoto
Electronics Letters 52 ( 25 ) 2057 - 2059 2016.12
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Design of a Four-Phase Interleaved Boost Circuit with Closed-Coupled Inductors
Daigoro Ebisumoto, Masataka Ishihara, Shota Kimura, Wilmar Martinez, Mostafa Noah, Masayoshi Yamamoto, Jun Imaoka
2016 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2016
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Basic Experiment Study on Misalignment Characteristic of Electrical Resonance Coupling Wireless Power Transfer
Hirokatsu Umegami, Masataka Ishihara, Fumiya Hattori, Mitsuru Masuda, Masayoshi Yamamoto
2015 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC) 2015
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Analysis and Design of Passive Components for Interleaved Flyback Converter with Integrated Transformer
Masataka Ishihara, Shota Kimura, Wilmar Martinez, Masayoshi Yamamoto
2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 5902 - 5909 2015
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Interleaved Active Clump Forward Converter with Novel Integrated Magnetic Components
Shota Kimura, Shogo Aoto, Masataka Ishihara, Jun Imaoka, Masayoshi Yamamoto
2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 6029 - 6036 2015
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Mid-range kHz Electric Resonance Coupling Wireless Power Tranfser
Hirokatsu Umegami, Masataka Ishihara, Fumiya Hattori, Mitsuru Masuda, Masayoshi Yamamoto, Kazuhiro Umetani
2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3197 - 3202 2015
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A Capacitor-less Gate Drive Circuit Using Two Parasitic Capacitors Suitable for Non-Insulating-Gate GaN FETs
Masataka Ishihara, Fumiya Hattori, Hirokatsu Umegami, Masayoshi Yamamoto
2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3212 - 3218 2014
MISC
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Feasibility Study on Fixed-Time Compensation of Control Signal Propagation Delay for Automatic Tuning Assist Circuit in 6.78MHz Wireless Power Transfer System
西尾颯真, 石原將貴, 梅谷和弘, 平木英治
電気学会研究会資料(Web) ( SPC-24-001-017/MD-24-001-017 ) 2024
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Miniaturization of Power Factor Control Circuit for LLC Converter Using Event-Driven Digital Controller
吉村勇人, 財津俊行, 梅谷和弘, 石原將貴, 平木英治, 堀井一宏
電気学会研究会資料(Web) ( HCA-24-010-017 ) 2024
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Two-Phase Interleaved Non-isolated High Step-down Converter with Automatic Current Sharing
石谷文絵, 石原將貴, 梅谷和弘, 平木英治
電気学会研究会資料(Web) ( SPC-24-044-050.052-054/MD-24-044-050.052-054 ) 2024
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Measurement of the Common Source Inductance of power devices with kelvin source terminal
小橋孝太郎, 小西晃央, 石原將貴, 梅谷和弘, 平木英治
パワーエレクトロニクス学会誌 48 2023
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Exploration of Plate Fins in Forced Air Cooled Heat Sinks with Reduced Thermal Resistance and Pressure Drops
高力斗亜, 平木英治, 梅谷和弘, 石原將貴
電気学会全国大会講演論文集(CD-ROM) 2023 2023
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Proposal of GaN-HEMT Mounting Method for High Power Density of Inverters for Electric Vehicles
竹原佑, 石原將貴, 梅谷和弘, 平木英治
パワーエレクトロニクス学会誌 48 2023
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Turn-off Surge Suppression Strategy Based on Parasitic Resonance Period in Replace of Power Loop Inductance Reduction
阿部洸希, 石原將貴, 梅谷和弘, 平木英治
電気学会全国大会講演論文集(CD-ROM) 2023 2023
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Proposal Novel Rotor Topology for Sinusoidal-Flux Reluctance Machine to Reduce Copper Losses
長安希和, 飯田将貴, 石原將貴, 梅谷和弘, 平木英治
パワーエレクトロニクス学会誌 48 2023
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Novel Control Circuit of Resonant Frequency Adjusting Circuit for Extending Reactance Compensation Range of Repeater Resonator for Inductive Coupling Wireless Power Transfer
小西晃央, 石原將貴, 梅谷和弘, 平木英治
パワーエレクトロニクス学会誌 48 2023
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Design Guideline of Parasitic Inductance for Preventing Oscillatory False Triggering of Two Paralleled GaN-HEMTs Caused by Parallel Oscillation between GaN-HEMTs
石原將貴, 吉田崚真, 梅谷和弘, 平木英治
電気学会産業応用部門大会(CD-ROM) 2023 2023
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Elucidation of the mechanism of the common source inductance of power devices with the kelvin source terminal
小橋孝太郎, 小西晃央, 梅谷和弘, 石原將貴, 林拓翔, 平木英治
電気学会産業応用部門大会(CD-ROM) 2023 2023
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小型EV向け高電力密度インバータ実現に向けて低寄生インダクタンス・高放熱性能を両立するためのアルミ基板を用いたGaN-HEMT実装方法の提案—Proposal of GaN-HEMT mounting method using aluminum substrate to achieve both low parasitic inductance and high heat dissipation performance to realize high power density inverter for compact EVs—半導体電力変換/モータドライブ合同研究会・半導体電力変換一般およびモータドライブ
竹原 佑, 石原 將貴, 梅谷 和弘, 平木 英治
電気学会研究会資料. SPC = The papers of technical meeting on semiconductor power converter, IEE Japan / 半導体電力変換研究会 [編] 2022 ( 143-147・149-159・161-171 ) 151 - 156 2022.9
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Progress of Litz Wire Copper Loss Model for Designing High-Frequency Magnetic Devices
梅谷和弘, 川原翔太, 石原將貴, 平木英治
電気学会全国大会講演論文集(CD-ROM) 2022 2022
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Power Factor Control Based Multiple-Transmitter for Achieving 6.78 MHz Wireless Power Transfer without Cross-Coupling Effects Among Transmitters and Among Receivers
石原將貴, 松浦晃大, 小西晃央, 梅谷和弘, 平木英治
電気学会産業応用部門大会(CD-ROM) 2022 2022
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Development of Self-excited Isolated DC-DC Converter for Gate Driver of High Voltage and High Frequency Power Supply
枝廣康太, 平木英治, 梅谷和弘, 石原將貴, 河野真吾, 霜村光太
電気学会産業応用部門大会(CD-ROM) 2022 2022
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Proposal of GaN-HEMT mounting method using aluminum substrate to achieve both low parasitic inductance and high heat dissipation performance to realize high power density inverter for compact EVs
竹原佑, 石原將貴, 梅谷和弘, 平木英治
電気学会研究会資料(Web) ( SPC-22-143-171/MD-22-078-106 ) 2022
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ハンドウタイ デンリョク ヘンカン/カデン ・ ミンセイ/ジドウシャ ゴウドウ ケンキュウカイ ・ ハンドウタイ デンリョク ヘンカン 、 カデン ミンセイ 、 ジドウシャ ギジュツ イッパン
ヨシオカ マサヒコ, イシハラ マサタカ, ウメタニ カズヒロ, ヒラキ エイジ
2021 ( 34・35・37-47 ) 19 - 24 2021.12
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Phase-Shift Transmitter Control System Achieving ZVS Operation Regardless of Cross-Interference Among Transmitters in Wireless Power Transfer System
松浦晃大, 石原將貴, 小西晃央, 梅谷和弘, 平木英治
電気学会産業応用部門大会(CD-ROM) 2021 2021
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Issues in Turn-on Loss Prediction as Seen from the Evaluation of Accuracy of Reverse Recovery Current Prediction of PSpice Diode Model
吉岡雅彦, 石原將貴, 梅谷和弘, 平木英治
電気学会研究会資料(Web) ( SPC-21-166-179/HCA-21-034-047/VT-21-029-042 ) 2021
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近接効果を設計する~電力トランス高周波化への挑戦~
梅谷和弘, 石原將貴, 平木英治
電気関係学会関西連合大会(Web) 2021 2021
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磁気結合の変動にロバストな磁界結合型ワイヤレス給電用中継共振器の実験的検証
小西晃央, 藤木啓太, 石原將貴, 梅谷和弘, 平木英治
電子情報通信学会技術研究報告 119 ( 364(EE2019 49-74)(Web) ) 2020
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複数の送電器間に生じる相互干渉を簡易な制御で自動補償可能な磁界結合型ワイヤレス給電システム
松浦晃大, 石原將貴, 小西晃央, 梅谷和弘, 平木英治
電子情報通信学会技術研究報告(Web) 120 ( 61(WPT2020 11-14) ) 2020
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Resonant inductive coupling wireless power transfer systems operating at 6.78MHz with automatic compensator against magnetic coupling variation for transmitter and resonator
藤木啓太, 小西晃央, 三島知浩, 石原將貴, 梅谷和弘, 平木英治
電気学会全国大会講演論文集(CD-ROM) 2020 2020
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Multiple-receiver Resonant Inductive Coupling Wireless Power Transfer System with Automatic Compensation Circuit of Cross-Coupling between Receivers
石原將貴, 梅谷和弘, 平木英治
電気学会産業応用部門大会(CD-ROM) 2019 2019
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藤木啓太, 石原將貴, 楠見隆行, 白川知秀, 小西晃央, 搆口晃希, 大畑奨真
電子情報通信学会技術研究報告 2018 ( 105 ) 37 - 42 2018.7
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磁界共振結合型ワイヤレス給電システムにおけるSS方式とSP方式の準双対性の解析
石原將貴, 梅谷和弘, 平木英治, 山本真義
電気学会産業応用部門大会(CD-ROM) 2016 2016
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巻線共有型密結合インダクタ方式インターリーブ二相昇圧チョッパ回路におけるインダクタ設計
CHUONG Thai Hoang, 蛭子本大悟郎, 石原將貴, 木村翔太, 山本真義
電気・情報関連学会中国支部連合大会講演論文集(CD-ROM) 67th 2016
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石原將貴, 梅上大勝, 山本真義, 梅谷和弘, 増田満
電子情報通信学会技術研究報告 2015 ( 112 ) 23 - 28 2015.7
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4相昇圧コンバータにおける密結合方式の設計方法
蛭子本大悟郎, 石原將貴, 伊藤勇輝, 青砥匠吾, 木村翔太, 今岡淳, 山本真義
電気・情報関連学会中国支部連合大会講演論文集(CD-ROM) 66th 2015
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瞬時空間ベクトル変調法を用いた三相電力変換システムの動作検証
新谷祐介, 石原將貴, 七森公碩, 金澤康樹, 山本真義
電気・情報関連学会中国支部連合大会講演論文集(CD-ROM) 65th 2014
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An Investigation of False Turn-on Mechanism with Circuit Simulator
西垣彰紘, 石原將貴, HOU Huyi, 七森公碩, 吉田尭, 金澤康樹, 梅上大勝, 服部文哉, 山本真義
電気学会電子デバイス研究会資料 2013 ( 124 ) 39 - 44 2013.10
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A Consideration about the Ringing Frequency of the Devices and Conductive Noise
金澤康樹, 石原將貴, HUYI Hou, 七森公碩, 西垣彰紘, 吉田尭, 山本真義
電気学会電子デバイス研究会資料 2013 ( 108 ) 75 - 79 2013.10
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双方向クランプ型ゲートドライブ回路
石原將貴, 七森公碩, 西垣彰紘, 吉田尭, 金澤康樹, 山本真義, 山口敦司
電気・情報関連学会中国支部連合大会講演論文集(CD-ROM) 64th 2013
Awards
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部門奨励賞 若手奨励賞（高橋勲賞）
2023.8 電気学会産業応用部門
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優秀論文発表賞A
2023.8 電気学会産業応用部門
Research Projects
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小型・高効率な次世代大容量電力変換器を実現する基板レイアウトの設計理論の確立
Grant number：22K14242 2022.04 - 2025.03
日本学術振興会 科学研究費助成事業 若手研究
石原 將貴
Grant amount：\4550000 （ Direct expense: \3500000 、 Indirect expense：\1050000 ）
次世代パワーデバイスであるSiC-MOSFETの誤動作の無い並列駆動の実現を目指し，本年度は，2並列接続した場合における基板レイアウトの設計理論の確立を目標に研究を進めてきた。まず，誤動作の2種類の発生パターンに着目して導出した簡単な等価回路を用いて，2並列した場合の誤動作が発生しないための条件を定式化した。その結果，2つのSiC-MOSFETが並列に接続されている場合の誤動作は，並列接続していない場合の誤動作と同様に，SiC-MOSFETの寄生容量値に応じて回路基板に潜在する寄生インダクタンスを適切に調整すれば回避できることを明らかに出来た。また，回路シミュレータPSpiceを用いて誤動作発生の有無と寄生インダクタンス値の関係を調べることで，導出した理論の妥当性を確認することに成功した。
現在，この理論の有効性を検証するために，実際のインバータ回路を製作し，寄生インダクタンスを調整して2並列接続した場合における誤動作を回避できるかを試験中である。具体的には，ダブルパルス試験で50A程度のスイッチング試験を行い，幾つかの回路条件で誤動作の有無を検証している。その結果，おおよそ理論通りのインダクタンス値で誤動作を抑制できていることを確認できたが，まだ試験は完了しておらず，更なる回路条件下での評価が必要になっている。
このまま2並列接続した際の誤動作を抑制する基板レイアウトの設計指針が確立できれば，より大電力アプリケーションにおいても，SiC-MOSFETの高速スイッチング動作を犠牲にすることなく，電力変換器を飛躍的に小型・高効率化できる可能性がある。
Class subject in charge
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Electrical and Electronic Engineering Experiments B （2024academic year） 3rd and 4th semester - 火3～7
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Communication and Network Engineering Experiments B （2024academic year） 3rd and 4th semester - 火3～7
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Technical English B1 （2024academic year） Third semester - 水7～8
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Technical English II （2024academic year） Third semester - 水7～8
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Advanced Study （2024academic year） Other - その他
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Technical Writing（Electronic Engineering） （2024academic year） Prophase - その他
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Technical Presentation（Electronic Engineering） （2024academic year） Late - その他
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Technical Writing （2024academic year） Prophase - その他
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Technical Presentation （2024academic year） Late - その他
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Electrical power and Motor Experiments （2024academic year） Summer concentration - その他
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Specific Research of Electronics and Information Systems Engineering （2024academic year） Year-round - その他
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Electrical and Communication Engineering Lab B （2024academic year） 3rd and 4th semester - その他
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Electrical and Communication Engineering Lab C （2024academic year） 3rd and 4th semester - その他
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Electrical and Electronic Engineering Experiments B （2023academic year） 3rd and 4th semester - 火3～7
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Communication and Network Engineering Experiments A （2023academic year） 3rd and 4th semester - 水3～7
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Communication and Network Engineering Experiments B （2023academic year） 3rd and 4th semester - 火3～7
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Technical English B1 （2023academic year） Third semester - その他
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Technical English II （2023academic year） 3rd and 4th semester - その他
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Advanced Study （2023academic year） Other - その他
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Technical Writing（Electronic Engineering） （2023academic year） Prophase - その他
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Technical Presentation（Electronic Engineering） （2023academic year） Late - その他
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Technical Writing （2023academic year） Prophase - その他
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Technical Presentation （2023academic year） Late - その他
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Electrical power and Motor Experiments （2023academic year） Summer concentration - その他
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Specific Research of Electronics and Information Systems Engineering （2023academic year） Year-round - その他
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Electrical and Communication Engineering Lab A （2023academic year） 1st-4th semester - その他
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Electrical and Communication Engineering Lab B （2023academic year） 3rd and 4th semester - その他
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Electrical and Communication Engineering Lab C （2023academic year） 3rd and 4th semester - その他
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Technical Writing （2022academic year） Prophase - その他
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Technical Presentation （2022academic year） Late - その他
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Specific Research of Electronics and Information Systems Engineering （2022academic year） Year-round - その他
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Electrical and Communication Engineering Lab A （2022academic year） 1st and 2nd semester - その他
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Electrical and Communication Engineering Lab C （2022academic year） 3rd and 4th semester - 火3～7
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Technical Writing （2021academic year） Prophase - その他
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Technical Presentation （2021academic year） Late - その他
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Specific Research of Electronics and Information Systems Engineering （2021academic year） Year-round - その他
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Electrical and Communication Engineering Lab A （2021academic year） 1st and 2nd semester - 水2,水3,水4,水5,水6
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Electrical and Communication Engineering Lab C （2021academic year） 3rd and 4th semester - 火3,火4,火5,火6,火7