Faculty Profiles - IMAOKA Jun

Papers - IMAOKA Jun

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Investigation on Relationship between Common Mode Noise and Distribution of Parasitic Capacitance Reviewed

Mamoru Sasaki, Jun Imaoka, Masayoshi Yamamoto

IEEJ Journal of Industry Applications Vol. 12 ( 3 ) page： 484 - 492 2023.5

Accurate Leakage Inductance Modeling Using an Artificial Neural Network Based on the Dowell Model Reviewed

Yu-Hsin Wu, Koichi Shigematsu, Yasumichi Omoto, Jun Imaoka, Masayoshi Yamamoto

IEEJ Journal of Industry Applications Vol. 12 ( 3 ) page： 334 - 344 2023.5

Gate Drive Circuit Suitable for a GaN Gate Injection Transistor Reviewed

Fumiya Hattori, Yuta Yanagisawa, Jun Imaoka, Masayoshi Yamamoto

IEEE Access Vol. 11 page： 43169 - 43182 2023.4

補助巻き線による結合インダクタ方式多相コンバータ用コモンモードノイズキャンセル Reviewed

佐々木守, 今岡淳, 山本真義, 仲野陽, 布施浩司

電気学会論文誌D Vol. 143 ( 4 ) page： 263 - 272 2023.4

非制御 LLC共振形コンバータを用いたモジュラーDC-DCコンバータの電流分担制御 Reviewed

朴青云, 今岡　淳, 山本真義

電気学会論文誌D Vol. 143 ( 4 ) page： 337 - 348 2023.4

An Implementation of Dowell Model with Neural Network to Foil Winding Transformer Reviewed

Yu Hsin Wu, Koichi Shigematsu , Yasumichi Omoto, Yoshihiro Ikushima, Jun Imaoka, Masayoshi Yamamoto

Proc. of 2023 the Applied Power Electronics Conference (APEC) 2023.3

パワー半導体基板内蔵技術による SiC ハーフブリッジ回路の設計・試作・評価

中村和人, 今岡淳, 山本真義, 金山天, 韓榮建, 加藤義尚, 末次正, 服部篤典, 野北寛太, 稲田太朗, 浅井寛美, 小泉雄大

エレクトロニクス実装学術講演大会講演論文集 Vol. 37 ( 0 ) page： 15C4-2 2023.3

Spike Surge and Conducted EMI Simulation of DC Brush Motor Considering Steady Arc at Mechanical Contacts Reviewed

Kodai Katagiri, Toru Ogawa, Masayoshi Yamamoto, Jun Imaoka, Mamoru Sasaki

IEEJ Journal of Industry Applications Vol. 12 ( 1 ) page： 86 - 93 2023.1

Analytical Model of Class-D Inverter for High-frequency Operation Reviewed

Yi Xiong, Senanayake Thilak, Daisuke Arai, Yu Yonezawa, Jun Imaoka, Masayoshi Yamamoto

Proc. of IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society page： 1 - 6 2022.10

Modeling and Design Method of Coupled Inductor Using Powder Core with Concentrated Air Gap Reviewed

Sihoon Choi, Jun Imaoka, Masayoshi Yamamoto

Proc. of 2022 IEEE Energy Conversion Congress and Exposition (ECCE) page： 1 - 5 2022.10

Feasible Evaluations of Low Profile Magnetic Structure Based on Meander Winding and Split-Magnetic Cores with High-Cooling Capability Used in Power Converters Reviewed

Jun Imaoka, Kazuya Matsuta, Hiroki Ochiai, Koichi Shigematsu, Mostafa Noah, Masayoshi Yamamoto

Proc. of 2022 IEEE Energy Conversion Congress and Exposition (ECCE) (ECCE) page： 1 - 7 2022.10

13.56MHz Half-Bridge GaN-HEMT Resonant Inverter Achieving High Power, Low Distortion, and High Efficiency by ‘L-S Network’ Reviewed

Aoi Oyane, Thilak Senanayake, Mitsuru Masuda, Jun Imaoka, Masayoshi Yamamoto

IEICE Transactions on Electronics Vol. E105-C ( 9 ) page： 407 - 418 2022.9

Reducing Transformer Losses with Adjustable Path-Core Type Inductance in 1.4-MHz LLC Resonant Converters Reviewed

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

IEEJ Journal of Industry Applications Vol. 11 ( 5 ) page： 664 - 673 2022.9

Spike Surge and Conducted EMI Simulation of DC Brush Motor Considering Steady Arc at Mechanical Contacts Reviewed

Kodai Katagiri, Toru Ogawa, Masayoshi Yamamoto, Jun Imaoka, Mamoru Sasaki

IEEJ Transactions on Industry Applications Vol. 142 ( 7 ) page： 490 - 497 2022.7

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan

<p>This study provides a circuit analysis model of a DC brush motor to predict spike surges at mechanical contacts and conducted EMI by considering the behavior of steady arc discharge. The mechanical contacts model comprises multiple variable resistors, constant voltage sources, ideal diodes, and stray capacitances. In the proposed model, spike surges with steady arc could be predicted with 90% accuracy. Moreover, simulated conducted EMI according to CISPR 25 standard is deviated from the measured value at a maximum of 25dB. Therefore, it is demonstrated that the quantitative prediction of conducted EMI requires consideration of a showering arc model at mechanical contacts.</p>

DOI： 10.1541/ieejias.142.490

CiNii Research

Finite Element Method based Thermal Magnetic Core Characteristics Modeling and Thermal Simulation Invited Reviewed

Hiroki Ochiai, Koichi Shigematsu, Jun Imaoka, Masayoshi Yamamoto

Proc. of 2022 IEEE International Symposium on Industrial Electronics (ISIE) page： 320 - 324 2022.6

Common Mode Noise Reduction of Two-Phase Interleaved Boost Converters with Integrated Magnetics Utilizing Balanced Technique Reviewed

Tomotaka Nagai , Mamoru Sasaki, Jun Imaoka, Masayoshi Yamamoto, Akira Nakano

Proc. of 2022 IEEE International Power Electronics Conference (IPEC 2022) page： 746 - 752 2022.5

An Investigation on the Relationship between CM Noise and Distribution of Parasitic Capacitance Reviewed

Mamoru Sasaki, Jun Imaoka, Masayoshi Yamamoto

Proc. of 2022 IEEE International Power Electronics Conference (IPEC 2022) page： 753 - 758 2022.5

An Investigation and Proposal for Accurate Leakage Inductance Modeling Based on Dowell Model Invited Reviewed

Yu-Hsin Wu, Koichi Shigematsu, Yasumichi Omoto, Jun Imaoka, Masayoshi Yamamoto

Proc. of 2022 IEEE International Power Electronics Conference (IPEC 2022) page： 1964 - 1969 2022.5

Derivation of Resonant Period for Soft Switching by Linearizing Output Capacitance of Switching Device Reviewed

Sihoon Choi, Ayato Suzuki, Jun Imaoka, Masayoshi Yamamoto

Proc. of 2022 IEEE International Power Electronics Conference (IPEC 2022) page： 2236 - 2241 2022.5

Construction of an Electric Aircraft System Model with Power Device Losses Reviewed

Takamitsu Yamahigashi, Kensuke Shibuya, Koichi Shigematsu, Jun Imaoka, Masayoshi Yamamoto

Proc. of 2022 IEEE International Power Electronics Conference (IPEC 2022) page： 2141 - 2146 2022.5

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Papers - IMAOKA Jun