Vias Placement Strategy for High Power Transformers with Vertically Stacked PCBs Reviewed

Haruki Shindo, Tomohide Shirakawa, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2025 IEEE International Communications Energy Conference (INTELEC)   61 - 67   2025.10

High-Bandwidth Embedded Rogowski Coil on Multilayer Substrate with Minimal Contribution to Power Loop Inductance Reviewed

Takahiro Okamoto, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2025 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC   321 - 326   2025

High-Current Performance Analysis of a Non-Isolated High Step-Down DC-DC Converter and Miniaturization of the Gate Drive Circuit Reviewed

Taira Shirahase, Fumie Ishitani, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki

2025 IEEE ENERGY CONVERSION CONGRESS & EXPOSITION ASIA, ECCE-ASIA   2025

Direct Effective Power Control (D-EPC) for LLC Resonant Converters Operating in Boost Mode Using Event-Driven-Timer Based Digital Controller Reviewed

Yuto Yoshimura, Kenji Funatani, Kazuhiro Umetani, Toshiyuki Zaitsu, Akito Nakagaki, Masataka Ishihara, Eiji Hiraki

2025 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC   2654 - 2659   2025

A Novel Soft-Switching Inverter using Auxiliary Power Supply for Capacitive Load High Voltage and High Frequency Applications Reviewed

Kento Hiraoka, Kazuhiro Umetani, Masataka Ishihara, Kota Shimomura, Eiji Hiraki

2025 IEEE ENERGY CONVERSION CONGRESS & EXPOSITION ASIA, ECCE-ASIA   2025

Suppression Strategy for Oscillation between Two Paralleled GaN-HEMTs Based on Harmonics of Switching Surge Reviewed

Kotaro Kobashi, Kazuhiro Umetani, Masataka Ishihara, Hiroto Sakai, Takuto Hayashi, Eiji Hiraki

2024 IEEE 21st International Power Electronics and Motion Control Conference (PEMC)   1 - 6   2024.9

Stack integration structure of multiple high-frequency magnetic devices for power applications

Daichi Buto, Kazuhiro Umetani, Tomohide Sirakawa, Masataka Ishihara, Eiji Hiraki

2024 Energy Conversion Congress & Expo Europe (ECCE Europe)   1 - 8   2024.9

Effectiveness Study of Streamlined Fin with Low-Pressure Loss to Improve Heat Dissipation Performance of Heat Sink Reviewed

Hiroki Seto, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki

INTELEC, International Telecommunications Energy Conference (Proceedings)   2024

GaN-HEMT Power Module of Aluminum-Clad Printed Circuit Boards for Small Power Loop Inductance and High Cooling Performance Reviewed

Kazuhiro Umetani, Yu Takehara, Masataka Ishihara, Eiji Hiraki

IEEE Transactions on Power Electronics   39 ( 10 )   12047 - 12052   2024

Non-Isolated Interleaved High Step-Down DC-DC Converter with Reduced Switched Capacitor Stages and Automatic Current Sharing Reviewed

Kazuhiro Umetani, Fumie Ishitani, Taira Shirahase, Masataka Ishihara, Eiji Hiraki

INTELEC, International Telecommunications Energy Conference (Proceedings)   2024

Compact Hardware Implementation of Power Factor Control for LLC converter with Event-Driven-Timer Based Digital Controller Reviewed

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

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 Reviewed

Masataka Ishihara, Kazuhiro Umetani, Akihiro Konishi, Eiji Hiraki

IEEE Access   12   98175 - 98188   2024

Parasitic Inductance Network Modeling Method for Power Module Inner Wirings Based on Inductance Matrix Measurement Reviewed

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

Prevention Oscillatory False Triggering of Two Paralleled GaN-HEMTs by Optimization Parasitic Capacitance and Common-Source Inductance Reviewed

Ryoma Yoshida, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2024 13TH INTERNATIONAL CONFERENCE ON RENEWABLE ENERGY RESEARCH AND APPLICATIONS, ICRERA 2024   831 - 836   2024

Actual Circuit Verification of LC Series Resonant Converter with Power Factor Control for Effective Power in Load regulation.

Akito Nakagaki, Eiji Hiraki, Kazuhiro Umetani, Masataka Ishihara, Yuto Yoshimura

50th Annual Conference of the IEEE Industrial Electronics Society(IECON)   1 - 7   2024

Artificial-Voice-Based Conversational Lecture Video Clips for Flipped Classroom. Reviewed

Kazuhiro Umetani, Yoshitaka Toyota, Masataka Ishihara, Eiji Hiraki

ISIE   1 - 7   2023

Rectifier-Integrated Printed-Circuit-Board Winding Structure of Secondary-Side Center-Tapped Transformer for Suppressing Parasitic Resonance between Decoupling Capacitors Reviewed

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

Introduction of Circuit Simulator to Power Electronics Education in Interdisciplinary Educational Environment Reviewed

Eiji Hiraki, Masataka Ishihara, Kazuhiro Umetani

2023 IEEE 10th International Conference on E-Learning in Industrial Electronics, ICELIE 2023   2023

Autonomous Resonant Frequency Tuner for a 6.78 MHz Inductive Coupling Wireless Power Transfer System to Stably Maximize Repeater Current Reviewed

Akihiro Konishi, Kazuhiro Umetani, Member Masataka Ishihara, Eiji Hiraki

IEEJ Journal of Industry Applications   12 ( 2 )   215 - 227   2023

Power Loop Inductance Optimization Strategy for Eliminating Turn-off Switching Surge for GaN-HEMT Switching Device Reviewed

Kazuhiro Umetani, Kento Tanohara, Koki Abe, Masataka Ishihara, Eiji Hiraki

2023 25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe   2023

Design of Embedded Experiments in Power Electronics Class Reviewed

Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki

2023 IEEE 10th International Conference on E-Learning in Industrial Electronics, ICELIE 2023   2023

Suppression Strategy for Oscillatory False Triggering Between Two paralleled GaN-HEMTs Based on Optimization of Parasitic Inductance Reviewed

Ryoma Yoshida, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023   5406 - 5413   2023

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 Reviewed

Kazuhiro Umetani, Yu Takehara, Masataka Ishihara, Eiji Hiraki

2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023   5531 - 5537   2023

Origin of Common Source Inductance in Power Device Packages with Kelvin Source Terminal Reviewed

Kotaro Kobashi, Akihiro Konishi, Kazuhiro Umetani, Masataka Ishihara, Takuto Hayashi, Eiji Hiraki

2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023   5510 - 5516   2023

Differences in Visibility of Students' Proficiency by Grading Methods in Energy Electronics-related Lectures Based on DX Format Reviewed

Eiji Hiraki, Masataka Ishihara, Kazuhiro Umetani

2022 IEEE 9th International Conference on e-Learning in Industrial Electronics (ICELIE)   2022.10

Solution-Oriented Teaching Method of Electric Power Circuit Design for Online On-demand Video Streaming Lecture Course Reviewed

Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki

2022 IEEE 9th International Conference on e-Learning in Industrial Electronics (ICELIE)   2022.10

Cross-Interference Free 6.78 MHz Multiple-Transmitter Using Power Factor Based Control for Wide-Area Wireless Power Transfer Systems Reviewed

Masataka Ishihara, Kodai Matsuura, Akihiro Konishi, Kazuhiro Umetani, Eiji Hiraki

2022 IEEE Energy Conversion Congress and Exposition (ECCE)   2022.10

Frequency Dependence Deterioration of AC Resistance in Large-Diameter Litz Wire for High Power Induction Heating Reviewed

Shota Kawahara, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki

2022 IEEE Energy Conversion Congress and Exposition (ECCE)   2022.10

High-Efficiency Solenoid Coil Structure for Induction Heating of Cylindrical Heating Object Reviewed

Daiki Miyake, Kazuhiro Umetani, Shota Kawahara, Masataka Ishihara, Eiji Hiraki

IEEE International Symposium on Industrial Electronics   2022-June   307 - 313   2022

Secondary-Side Resonating LLC Converter for Reducing Transformer Voltage in High Power Applications Reviewed

Hayato Nakamura, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki

2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia   547 - 554   2022

Phase-Shift Based on Power Factor Control for LLC Converter with High Output Stability Against Load Fluctuation Reviewed

Kenta Yamada, Kazuhiro Umetani, Eiji Hiraki, Masataka Ishihara

2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022   2022

A Secondary-Side Resonant LLC converter for Reducing Resonance Voltage with Boost Mode Operation Using Resonance Including Current Doubler Rectifier Reviewed

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

Sinusoidal-Flux Reluctance Machine Driven with Three-Phase Inverter for Improving Power Density with Reduced Torque and Input Current Ripples Reviewed

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

Autonomous System Concept of Multiple-Receiver Inductive Coupling Wireless Power Transfer for Output Power Stabilization Against Cross-Interference Among Receivers and Resonance Frequency Tolerance Reviewed

Masataka Ishihara, Keita Fujiki, Kazuhiro Umetani, Eiiji Hiraki

IEEE Transactions on Industry Applications   57 ( 4 )   3898 - 3910   2021.7

Parasitic Inductance Design for Preventing Oscillatory False Triggering of Parallel-Connected GaN-FETs. Reviewed

Yusuke Hatakenaka, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki, Hiroshi Tadano

IECON Proceedings (Industrial Electronics Conference)   2021-October   1 - 8   2021

Tiny Approaches to the Interactive Online Lectures Under the COVID-19 Pandemic. Reviewed

Eiji Hiraki, Masataka Ishihara, Kazuhiro Umetani

IECON Proceedings (Industrial Electronics Conference)   2021-October   1 - 4   2021

Feasibility of Parasitic Drain Inductance Design for Minimizing Switching Loss in Bridge Circuits Using GaN-FETs. Reviewed

Koki Abe, Masataka Ishihara, Yusuke Hatakenaka, Kazuhiro Umetani, Eiji Hiraki

IEEE International Symposium on Industrial Electronics   2021-June   1 - 5   2021

Autonomous Resonant Frequency Tuning Controller for Repeater Resonator in Resonant Inductive Coupling Wireless Power Transfer System. Reviewed

Akihiro Konishi, Kazuhiro Umetani, Masataka Ishihara, Eiii Hiraki

IEEE International Symposium on Industrial Electronics   2021-June   1 - 8   2021

Multiple-Transmitter with Phase-Shift and Dynamic ZVS Angle Controls at Fixed Operating Frequency for Cross-Interference Free Wireless Power Transfer Systems Reviewed

Kodai Matsuura, Masataka Ishihara, Akihiro Konishi, Kazuhiro Umetani, Eiji Hiraki

2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   5767 - 5774   2021

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 Reviewed

Kazuhiro Umetani, Kota Shimomura, Kenta Yamada, Taichi Kawakami, Masataka Ishihara, Eiji Hiraki

2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   3436 - 3443   2021

Strategy of Topology Selection Based on Quasi-Duality Between Series–Series and Series–Parallel Topologies of Resonant Inductive Coupling Wireless Power Transfer Systems Reviewed

Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

IEEE Transactions on Power Electronics   35 ( 7 )   6785 - 6798   2020.7

Optimization of Common Source Inductance and Gate-Drain Capacitance for Reducing Gate Voltage Fluctuation after Turn-off Transition Reviewed

Yusuke Hatakenaka, Kazuhiro Umetani, Masataka Ishihara, Eiji Hiraki

2020 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   3155 - 3162   2020

Multiple-Transmitter Achieving Load-Independent Transmitter Current and Compensation of Cross-Interference Among Transmitters for Wide Charging Area Wireless Power Transfer Systems Reviewed

Kodai Matsuura, Masataka Ishihara, Akihiro Konishi, Kazuhiro Umetani, Eiji Hiraki

2020 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   5474 - 5481   2020

Receiving-coil structure reducing stray AC resistance for resonant coupling wireless power transfer Reviewed

Kazuhiro Umetani, Toru Honjo, Takahiro Koyama, Masataka Ishihara, Eiji Hiraki

IET POWER ELECTRONICS   12 ( 9 )   2338 - 2344   2019.8

Automatic Active Compensation Method of Cross-Coupling in Multiple-receiver Resonant Inductive Coupling Wireless Power Transfer Systems Reviewed

Masataka Ishihara, Keita Fujiki, Kazuhiro Umetani, Eiji Hiraki

2019 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   4584 - 4591   2019

Experimental Verification of Impedance Matching Method for Repeater to Improve Spatial Freedom of 6.78 MHz Resonant Inductive Coupling Wireless Power Transfer Systems Reviewed

Keita Fujiki, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2019 21ST EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE '19 ECCE EUROPE)   2019

Impedance Matching to Maximize Induced Current in Repeater of Resonant Inductive Coupling Wireless Power Transfer Systems Reviewed

Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   6194 - 6201   2018

Automatic Resonance Frequency Tuning Method for Repeater in Resonant Inductive Coupling Wireless Power Transfer Systems Reviewed

Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA)   1610 - 1616   2018

Improving Robustness Against Variation in Resonance Frequency for Repeater of Resonant Inductive Coupling Wireless Power Transfer Systems Reviewed

Masataka Ishihara, Shoma Ohata, Keita Fujiki, Kazuhiro Umetani, Eiji Hiraki

2018 20TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'18 ECCE EUROPE)   2018

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

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

Elucidation of Quasi-Duality between Series-Series and Series-Parallel Topologies of Resonant Inductive Coupling Wireless Power Transfer Systems Reviewed

Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2017 IEEE 12TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS (PEDS)   2017-December   674 - 679   2017

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

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

Simple Self-Driven Synchronous Rectifier for Resonant Inductive Coupling Wireless Power Transfer Reviewed

Takahiro Koyama, Toru Honjo, Masataka Ishihara, Kazuhiro Umetani, Eiji Hiraki

2017 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC)   2017-October   363 - 368   2017

Quasi-duality between SS and SP topologies of basic electric-field coupling wireless power transfer system Reviewed

M. Ishihara, K. Umetani, H. Umegami, E. Hiraki, M. Yamamoto

Electronics Letters   52 ( 25 )   2057 - 2059   2016.12

Design of a Four-Phase Interleaved Boost Circuit with Closed-Coupled Inductors Reviewed

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

2016 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   2016

Basic Experiment Study on Misalignment Characteristic of Electrical Resonance Coupling Wireless Power Transfer Reviewed

Hirokatsu Umegami, Masataka Ishihara, Fumiya Hattori, Mitsuru Masuda, Masayoshi Yamamoto

2015 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC)   2015

Analysis and Design of Passive Components for Interleaved Flyback Converter with Integrated Transformer Reviewed

Masataka Ishihara, Shota Kimura, Wilmar Martinez, Masayoshi Yamamoto

2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   5902 - 5909   2015

Interleaved Active Clump Forward Converter with Novel Integrated Magnetic Components Reviewed

Shota Kimura, Shogo Aoto, Masataka Ishihara, Jun Imaoka, Masayoshi Yamamoto

2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   6029 - 6036   2015

Mid-range kHz Electric Resonance Coupling Wireless Power Tranfser Reviewed

Hirokatsu Umegami, Masataka Ishihara, Fumiya Hattori, Mitsuru Masuda, Masayoshi Yamamoto, Kazuhiro Umetani

2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   3197 - 3202   2015

A Capacitor-less Gate Drive Circuit Using Two Parasitic Capacitors Suitable for Non-Insulating-Gate GaN FETs Reviewed

Masataka Ishihara, Fumiya Hattori, Hirokatsu Umegami, Masayoshi Yamamoto

2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)   3212 - 3218   2014

High-power verification of a high-power density inverter with multiple parallel GaN power semiconductors realized using a metal core substrate

山中駿輔, 梅谷和弘, 石原將貴, 平木英治

電気学会研究会資料(Web)   ( PE-25-044-078/PSE-25-076-110/SPC-25-091-125 )   2025

Derivation of Closed Loop Transfer Function and Design of High Bandwidth Compensator for Direct Effective Power Control (D-EPC) LLC Converters in Boost Mode Operation

鮒谷研治, 吉村勇人, 財津俊行, 梅谷和弘, 小林和仁, 中垣有希人, 石原將貴, 平木英治

電気学会研究会資料(Web)   ( HCA-25-008-011 )   2025

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

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

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

High Bandwidth Embedded Rogowski Coils for GaN-HEMT Power Modules

岡本敬宏, 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)   2024   2024

Multi-Layered Integrated Magnetic Structure for Miniaturizing Secondary-Side Resonant LLC Converter

横島直之, 梅谷和弘, 石原將貴, 平木英治, 宮崎達也, 大河内裕太

電気学会研究会資料(Web)   ( SPC-24-153-174.176-177/MD-24-099-120.122-123 )   2024

Modeling based on measurement of voltage dependence of gate-source capacitance to improve accuracy of switching loss estimation

林拓翔, 梅谷和弘, 石原將貴, 小橋考太郎, 平木英治, 坂井優斗, 大河内裕太

電気学会産業応用部門大会(CD-ROM)   2024   2024

Actual verification of improved direct effective power control (D-EPC) for resonant converters solving control characteristic degradation at low power

中垣有希人, 平木英治, 梅谷和弘, 石原將貴, 吉村勇人

電子情報通信学会技術研究報告(Web)   124 ( 200(EE2024 9-10) )   2024

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

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

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

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

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

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

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

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

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

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

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

Novel Control Circuit of Resonant Frequency Adjusting Circuit for Extending Reactance Compensation Range of Repeater Resonator for Inductive Coupling Wireless Power Transfer Reviewed

Konishi Akihiro, Ishihara Masataka, Umetani Kazuhiro, Hiraki Eiji

Journal of the Japan Institute of Power Electronics   48   97 - 106   2022

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

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

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

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

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

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

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

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

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

Request Talk : Ultra-Lightweight Wireless Power Transfer System : Topology Selection and Key Point of Design

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

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

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

Analysis of Electric-Field Resonance Coupling Wireless Power Transfer System with Lagrangian-based Equivalent Circuit

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

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

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

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

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

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

Electrical and Communication Engineering Lab C （2025academic year） 3rd and 4th semester  - その他

Electrical and Electronic Engineering Experiments B （2024academic year） 3rd and 4th semester  - 火3～7

Communication and Network Engineering Experiments B （2024academic year） 3rd and 4th semester  - 火3～7

Technical English B1 （2024academic year） Third semester  - 水7～8

Technical English II （2024academic year） Third semester  - 水7～8

Advanced Study （2024academic year） Other  - その他

Technical Writing（Electronic Engineering） （2024academic year） Prophase  - その他

Technical Presentation（Electronic Engineering） （2024academic year） Late  - その他

Technical Writing （2024academic year） Prophase  - その他

Technical Presentation （2024academic year） Late  - その他

Electrical power and Motor Experiments （2024academic year） Summer concentration  - その他

Specific Research of Electronics and Information Systems Engineering （2024academic year） Year-round  - その他

Electrical and Communication Engineering Lab B （2024academic year） 3rd and 4th semester  - その他

Electrical and Communication Engineering Lab C （2024academic year） 3rd and 4th semester  - その他

Electrical and Electronic Engineering Experiments B （2023academic year） 3rd and 4th semester  - 火3～7

Communication and Network Engineering Experiments A （2023academic year） 3rd and 4th semester  - 水3～7

Communication and Network Engineering Experiments B （2023academic year） 3rd and 4th semester  - 火3～7

Technical English B1 （2023academic year） Third semester  - その他

Technical English II （2023academic year） 3rd and 4th semester  - その他

Advanced Study （2023academic year） Other  - その他

Technical Writing（Electronic Engineering） （2023academic year） Prophase  - その他

Technical Presentation（Electronic Engineering） （2023academic year） Late  - その他

Technical Writing （2023academic year） Prophase  - その他

Technical Presentation （2023academic year） Late  - その他

Electrical power and Motor Experiments （2023academic year） Summer concentration  - その他

Specific Research of Electronics and Information Systems Engineering （2023academic year） Year-round  - その他

Electrical and Communication Engineering Lab A （2023academic year） 1st-4th semester  - その他

Electrical and Communication Engineering Lab B （2023academic year） 3rd and 4th semester  - その他

Electrical and Communication Engineering Lab C （2023academic year） 3rd and 4th semester  - その他

Technical Writing （2022academic year） Prophase  - その他

Technical Presentation （2022academic year） Late  - その他

Specific Research of Electronics and Information Systems Engineering （2022academic year） Year-round  - その他

Electrical and Communication Engineering Lab A （2022academic year） 1st and 2nd semester  - その他

Electrical and Communication Engineering Lab C （2022academic year） 3rd and 4th semester  - 火3～7

Technical Writing （2021academic year） Prophase  - その他

Technical Presentation （2021academic year） Late  - その他

Specific Research of Electronics and Information Systems Engineering （2021academic year） Year-round  - その他

Electrical and Communication Engineering Lab A （2021academic year） 1st and 2nd semester  - 水2,水3,水4,水5,水6

Electrical and Communication Engineering Lab C （2021academic year） 3rd and 4th semester  - 火3,火4,火5,火6,火7