Simple control technique to eliminate source current ripple and torque ripple of switched reluctance motors for electric vehicle propulsion. - Takayuki Kusumi; Takuto Hara; Kazuhiro Umetani; Eiji Hiraki (IECON, 2016)

Copper loss analysis based on extremum co-energy principle for high frequency forward transformers with parallel-connected windings. - Tomohide Shirakawa; Genki Yamasaki; Kazuhiro Umetani; Eiji Hiraki (IECON, 2016)

Soft-switching technique applicable to capacitive load for resonant inverter of plasma generator. - Koji Itakura; Hiroaki Kakemizu; Hiroki Nakaido; Kazuhiro Umetani; Eiji Hiraki; Tatsuya Ikenari; Shingo Kawano (IECON, 2017)

Compact three-phase AC inductor network for PFC converter using magnetic coupled technique. - Takuya Ozaki; Hiroki Nakaido; Kazuhiro Umetani; Eiji Hiraki; Tatsuya Ikenari; Shingo Kawano (IECON, 2017)

Straightforward Measurement Method of Common Source Inductance for Fast Switching Semiconductor Devices Mounted on Board. - Kazuhiro Umetani; Kyota Aikawa; Eiji Hiraki (IEEE Trans. Ind. Electron., 2017)

Soft-Switching Control Circuit Based on Traveling and Reflected Waves for High-Frequency Resonant Inverter Applicable to Capacitive Load Impedance. - Aoi Oyane; Koji Itakura; Kazuhiro Umetani; Eiji Hiraki; Tatsuya Ikenari; Shingo Kawano (IECON, 2018)

Improved Thin Heating Coil Structure of Copper Foil Feasible for Induction Cookers. - Kazuhiro Umetani; Tomohiro Mishima; Eiji Hiraki; Takayuki Hirokawa; Makoto Imai; Hideki Sadakata (IECON, 2018)

Theoretical Derivation of Phase Current Profile for Switched Reluctance Motors to Suppress Radial Force Ripple and Torque Ripple. - Takayuki Kusumi; Takuto Hara; Kazuhiro Umetani; Eiji Hiraki (ISIE, 2018)

Review of Current Balance Mechanism in Multiphase LLC Resonant Converters. - Mostafa Noah; Jun Imaoka; Yuki Ishikura; Kazuhiro Umetani; Masayoshi Yamamoto (ISIE, 2018)

Core Loss Modeling Based on Equivalent Circuit for Switched Reluctance Motors. - Takayuki Kusumi; Kosuke Kobayashi; Takuto Hara; Kazuhiro Umetani; Eiji Hiraki (ICIT, 2019)

Competition-Based Learning of Power Converter Design Emulating Product Development Activity. - Kazuhiro Umetani; Eiji Hiraki (IECON, 2020)

Gate Drivers Techniques and Solutions for GaN HEMTs in High Frequency Applications. - Wei-Ren Lin; Camilo Suarez; Kazuhiro Umetani; Wilmar Martinez (ISIE, 2020)

Secondary-Side Center-Tapped Transformer Structure with One-Turn Secondary Coils Integrating Rectifier for Reducing Copper Loss of Forward Converter. - Tomohide Shirakawa; Kazuhiro Umetani; Eiji Hiraki; Wilmar Martinez (ISIE, 2020)

E-Learning in Industrial Electronics during Covid-19. - Larisa Dunai 001; João F. A. Martins; Kazuhiro Umetani; Oscar Lucía; M. Yousef Ibrahim 001; Gayan Kahandawa Appuhamillage (ICIT, 2021)

Parasitic Inductance Design for Preventing Oscillatory False Triggering of Parallel-Connected GaN-FETs. - Yusuke Hatakenaka; Kazuhiro Umetani; Masataka Ishihara; Eiji Hiraki; Hiroshi Tadano (IECON, 2021)

Tiny Approaches to the Interactive Online Lectures Under the COVID-19 Pandemic. - Eiji Hiraki; Masataka Ishihara; Kazuhiro Umetani (IECON, 2021)

Cooperation between Theoretical and Practical Education through Power Electronics Circuits. - Taichi Kawakami; Kazuhiro Umetani; Shigeo Morimoto (IECON, 2021)

Feasibility of Parasitic Drain Inductance Design for Minimizing Switching Loss in Bridge Circuits Using GaN-FETs. - Koki Abe; Masataka Ishihara; Yusuke Hatakenaka; Kazuhiro Umetani; Eiji Hiraki (ISIE, 2021)

Autonomous Resonant Frequency Tuning Controller for Repeater Resonator in Resonant Inductive Coupling Wireless Power Transfer System. - Akihiro Konishi; Kazuhiro Umetani; Masataka Ishihara; Eiji Hiraki (ISIE, 2021)

High-Efficiency Solenoid Coil Structure for Induction Heating of Cylindrical Heating Object. - Daiki Miyake; Kazuhiro Umetani; Shota Kawahara; Masataka Ishihara; Eiji Hiraki (ISIE, 2022)

Artificial-Voice-Based Conversational Lecture Video Clips for Flipped Classroom. - Kazuhiro Umetani; Yoshitaka Toyota; Masataka Ishihara; Eiji Hiraki (ISIE, 2023)

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 (IECON, 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. - Masataka Ishihara; Kazuhiro Umetani; Akihiro Konishi; Eiji Hiraki (IEEE Access, 2024)

Load Observing System Based on Wave Reflection for Soft-Switching Control of MHz-Frequency Resonant Inverter Against Load Fluctuations. - Aoi Oyane; Kazuhiro Umetani; Eiji Hiraki (IEEE Access, 2025)

Optical Pulse Detection IC LIDARX Integrated in MMX-LIDAR. - Takahide Mizuno; Hirokazu Ikeda; Hiroki Senshu; Toru Nakura; Kazuhiro Umetani; Akihiro Konishi; Akihito Ogawa; Kaito Kasai; Kosuke Kawahara (IEICE Trans. Electron., 2025)