Journals


Journals

  1. Masayoshi Yamamoto, Eiji Hiraki, Mutsuo Nakaoka, "Feasible Evaluations of 3-Level 3-Phase Voltage-Fed Soft-Switching Inverter with Two Active Resonant Snubbers", IEEJ Trans. IA, Vol. 121-D, No.7, pp. 821-822 (2001-7)

  2. Masayoshi Yamamoto, Sato Shinji, Mutsuo Nakaoka, "3-Level Three Phase Soft-Switching PWM Rectifier with Single Auxiliary Resonant Commutated Snubber Circuit", IEEJ Trans. IA, Vol.123-D, No.2, pp .166-167 (2003-2)

  3. Masayoshi Yamamoto, Shinji Sato, Eiji Hiraki and Mutsuo Nakaoka, "Auxiliary Resonant Commutated Leg Snubber Linked 3-Level 3-Phase Voltage Source Soft-Switching Inverter", KIPE International Transactions of Power Electronics, Vol.3, No.2, pp.90-98, 2003.

  4. Shinichiro Nagai, Sato Shinji, Masayoshi Yamamoto, Eiji Hiraki and Mutsuo Nakaoka, "3-Level Three Phase Soft-Switching PWM Rectifier with Single Auxiliary Resonant Commutated Snubber Circuit", IEEJ Trans. IA, Vol.123, No.6, pp.710-716 (2003-6)

  5. Masayoshi Yamamoto, Sato Shinji and Mutsuo Nakaoka, "A Novel Voltage Clamped Snubber Circuit Topology Suitable for Multilevel Inverter with Its Lower Power Loss Performances", IEEJ Trans. IA, Vol.123-D, No.9, pp. 995-1003 (2003-9)

  6. Masayoshi Yamamoto, Sato Shinji, Eiji Hiraki and Mutsuo Nakaoka, "New Space Vector Modulated 3-Level 3-Phase Voltage-Source Soft-Switching Inverter with Two Active Resonant DC Link Snubbers", IEEJ Trans. IA, Vol.123-D, No.12, pp. 1397-1405 (2003-12)

  7. Sato Shinji, Shinichiro Nagai, Masayoshi Yamamoto, Md Rukonuzaaman and Mutsuo Nakaoka, "High Efficient Low Noise Three Phase Voltage-Fed Soft-Switching Double PWM Converter System with A Single Resonant DC Link Snubber", IEEJ Trans. IA, Vol.124-D, No.1, pp. 54-61 (2004-1)

  8. Masayoshi Yamamoto, Shinji Sato, Tarek Ahmed, Eiji Hiraki, Hyun Woo Lee and Mutsuo Nakaoka, "Three-Phase Current Source Type ZVS-PWM Controlled PFC Rectifier with Single Active Auxiliary Resonant Snubber and Its Feasible Evaluations", KIEE International Transactions on Electrical Machinery and Energy Conversion Systems, Vol.4-B No.3, pp.127-133, 2004.

  9. Takahiro Kawashima, Shigeyuki Funabiki, Masayoshi Yamamoto, Mamoru Tsuruya and Masashi Ochiai " Recovery-less Boost Converter for Electric Vehicle", The Japan Institute of Power Electronics, Vol. 33, pp. 107-114 (2008-3)

  10. Shigeyuki Funabiki, Shinsuke Kodama and Masayoshi Yamamoto, "Performance of Electric Double-Layer Capacitor Simulators", IEEJ Trans. IA, Vol.127-D, No.9, pp. 1030-1031 (2007-9)

  11. Tetsuya Sugio, Masayoshi Yamamoto and Shigeyuki Funabiki, "A Fuzzy-Based Control Method for Smoothing Capacitor Fluctuations in Substations along High-Speed Railways", IEEJ Trans. IA, Vol.129-D, No.2, pp. 207-213 (2009-2)

  12. Hiroyuki Horii, Masayoshi Yamamoto, and Shigeyuki Funabiki, Hideki Asuke and Shuji Takano " Current Mode Control Method suitable for Multi-phase DC-DC Convereter", The Japan Institute of Power Electronics, Vol. 34, pp. 65-71 (2009-3)

  13. Shigeyuki Funabiki and Masayoshi Yamamoto, "Estimation of Bidirectional Buck/boost DC/DC Converter with Electric Double-Layer Capacitor for Energy Storage Systems", IEEJ Trans. IA, Vol.129-D, No.6, pp. 658-663 (2009-6)

  14. Yoshikazu Matsuda, Masayoshi Yamamoto and Shigeyuki Funabiki, "Short-Term Forecast of PV Generating Electric Power with Chaos", IEEJ Trans. IA, Vol.129-D, No.6, pp. 664-665 (2009-6)

  15. Yousuke Nagata, Masayoshi Yamamoto and Shigeyuki Funabiki, "Gait Evaluation of Overground Walking and Treadmill Walking Using Compass-Type Walking Model", IEEJ Trans. IA, Vol. 129-C, No.7, pp. 1212-1219 (2009-7)

  16. Yuuki Arakane, Hitoshi Noguchi, Masayoshi Yamamoto and Shigeyuki Funabiki, "A Novel Residential Distributed-Generating System with Solar Cells and Fuel Cells and its Cost Estimation", IEEJ Trans. IA, Vol. 129-B, No. 10, pp. 1252-1258 (2009-10)

  17. Junpei Ito, Masayoshi Yamamoto and Shigeyuki Funabiki, "Optimization of Electric Power Leveling Systems by a Novel Hybrid Algorithm with Simulated Evolution and Genetic Algorithms", IEEJ Trans. IA, Vol. 129-B, No. 11, pp. 1390-1396 (2009-11)

  18. Masayoshi Yamamoto, Hisanori Morii and Shigeyuki Funabiki, "Novel Smoothing Capacitor-less ARCP Scheme Soft Switching Inverter", IEEJ Trans. IA, Vol.130-D, No.2, pp. 258-259 (2010-2)

  19. Takahiro Kawashima, Masayoshi Yamamoto, and Shigeyuki Funabiki, Hideki Asuke, Hiromitsu Terui and Shuji Takano, "Characteristic Analysis and Evaluation about Mutual Coupling Inductor of Multi-Phase Trans-Linked Boost Chopper Circuit", The Japan Institute of Power Electronics, Vol. 35, pp. 136-145 (2010-3)

  20. Masayoshi Yamamoto, Hiroyuki Horii, "Trans-Linked Single Phase Interleaved PFC Converter", IEEJ Trans. IA, Vol.130-D, No.6, pp. 828-829 (2010-6)

  21. Masayoshi Yamamoto, Hirotaka Toda, Takahiro Kawashima and Toshiyuki Yoshida, "Hybrid Recovery-less Method Soft Switching Boost Chopper Circuit", IEEJ Trans. IA, Vol.131-D, No. 9, pp. 1173-1174 (2011-3)

  22. Yuta Nakamura and Masayoshi Yamamoto, "Optimum Control Design Method of Multi-Phase Trans-Linked Type Boost Chopper Circuit", IEEJ Trans. IA, Vol. 132-D, No. 1, pp. 121-122 (2012-1)

  23. Takahiro Kawashima and Masayoshi Yamamoto, " Miniaturization of a Transformer-Linked Multi-Phase Boost Chopper Circuit Using Boost Ratio Adjustment", IEEJ Trans. IA, Vol. 133-D, No. 4, pp. 428-435 (2013-4)

  24. Yuta Nakamura and Masayoshi Yamamoto, "Stabilization Design of Digital Control for Multi-Phase Trans-Linked Type Boost Chopper Circuits", IEEJ Trans. IA, Vol. 133-D, No. 4, pp. 566-567 (2013-4)

  25. Yuki Ishikura and Masayoshi Yamamoto, "Input Current Analysis of Novel Transformer-linked Single Phase Power Factor Correction Converter", IEEJ Trans. IA, Vol. 133-D, No. 6, pp. 570-576 (2013-6)

  26. Fumiya Hattori, Hirokatsu Umegami, Takashi Yoshida, Masayoshi Yamamoto and Atsushi Yamaguchi "A Novel Gate Drive Circuit Based on Positive Voltage Suitable for Normally-On Type GaN-FET", IEEJ Trans. IA, Vol. 133-D, No. 6, pp. 666-667 (2013-6)

  27. Jun Imaoka, Masayoshi Yamamoto, Yuta Nakamura, and Takahiro Kawashima, "Analysis of Output Capacitor Storage Charge in Multi-phase Transformer-Linked Boost Chopper Circuit," IEEJ Journal of Industrial Applications, Vol. 2, No. 5, pp. 252-260 (2013)

  28. Fumiya Hattori, Hirokatsu Umegami, and Masayoshi Yamamoto, "A Capacitor-less Gate Drive Circuit Capable of High-Efficiency Operation for Non-Insulating-Gate GaN FETs," IEEE Transactions on Electron Devices, Vol. 60, Issue. 10, pp. 3249-3255 (2013)

  29. Jun Imaoka, Masayoshi Yamamoto, and Takahiro Kawashima, "Characteristic Analysis and Design of Boost Chopper Circuit using Coupled Inductor for Electric Vehicle", The Japan Institute of Power Electronics, Vol. 39, pp. 55-64 (2013-3)

  30. Hirokatsu Umegami, Fumiya Hattori, Yu Nozaki, Masayoshi Yamamoto, and Osamu Machida, "A Novel High Efficiency Gate Drive Circuit for Normally Off Type GaN FET," IEEE Transaction on Industry Applications, Vol. 50, Issue 1, pp. 593-599 (2014)

  31. Hirokatsu Umegami, Akihiro Nishigaki, Fumiya Hattori, and Masayoshi Yamamoto, "Investigation of False Triggering Mechanism", IEEJ Transactions on Electrical and Electronic Engineering, Vol. 9, Issue 1, pp. 102-104 (2014)

  32. Kazuhiro Umetani, Jun Imaoka and Masayoshi Yamamoto, "Evaluation of the Lagrangian Method for Deriving Equivalent Circuits of Integrated Magnetic Components: A Case Study Using the Integrated Winding Coupled Inductor," IEEE Transaction on Industry Applications, Vol. 51, Issue 1, pp. 547-555 (2015)

  33. Jun Imaoka and Masayoshi Yamamoto, Takahiro Kawashima, "High Power Density Three-phase Interleaved Boost Converter with a Novel Coupled Inductor," IEEJ Journal of Industrial Applications, Vol. 4, No. 1, pp. 20-30 (2015)

  34. Jun Imaoka, Shota Kimura, WilmarMartinez and Masayoshi Yamamoto, "A Novel Integrated Magnetic Core Structure Suitable for Transformer-linked Interleaved Boost chopper Circuit," IEEJ Journal of Industry Applications, Vol. 4, No. 1, pp. 20-30 (2015)

  35. Shota Kimura, Jun Imaoka and Masayoshi Yamamoto, "Maximum Allowable Power and Downsizing Performance in High Power Density Boost Converters", The Japan Institute of Power Electronics, Vol. 40, pp. 84-92 (2014-3)

  36. Kimihiro Nanamori, Toshikazu Harada, Hirokatsu Umegami and Masayoshi Yamamoto, "Examination of Recovery Suppression Method with the Parallel Connection SiC SBD", The Japan Institute of Power Electronics, Vol. 40, pp. 76-83 (2014-3)

  37. Wilmar Martinez, Jun Imaoka, Masayoshi Yamamoto and Kazuhiro Umetani, “Parasitic Resistance Analysis in a Novel High Step-Up Interleaved Converter for Hybrid Electric Vehicles”, JIPE-Power Electronics Journal, JIPE-40-08, Vol. 40, March, 2015. (Accepted)

  38. Jun Imaoka, Shota Kimura, Yuki Itoh, Wilmar Martinez and Masayoshi Yamamoto, Michiaki Suzuki, Kenji Kawano, "Feasible Evaluations of Coupled Multilayer Chip Inductor for POL Converters," IEEJ Journal of Industrial Applications, Vol. 4, No. 3 (2015).

  39. Shogo Aoto, Shota Kimura, Jun Imaoka and Masayoshi Yamamoto, "Maximum Allowable Power and Downsizing Performance in High Power Density Boost Converters", IEEJ Trans. IA, Vol. 135-C, No. 7, pp. 774-786 (2015-7)

  40. Akihiro Nishigaki, Hirokatsu Umegami, Taichi Mishima, Fumiya Hattori and Masayoshi Yamamoto, "An Analysis of False Turn-On Mechanism on Semiconductor Devices", IEEJ Trans. IA, Vol. 135-C, No. 7, pp. 769-775 (2015-7)

  41. Wilmar Martinez, Jun Imaoka, Kimihiro Nanamori, Masayoshi Yamamoto and Takahiro Kawashima, "Recovery-Less Boost Converter with Saturable Inductor for Electric Vehicle Applications," IEEJ Journal of Industry Applications, Vol. 135, No. 9, pp. 914-921 (2015).

  42. Kazuhiro Umetani, Masayoshi Yamamoto and Eiji Hiraki, "Lagrangian-Based Derivation of a Novel Sliding-Mode Control for Synchronous Buck," IEEJ Journal of Industry Applications, Vol. 4, No. 6, pp. 728-729 (2015).

  43. Hirokatsu Umegami, Kazuhiro Umetani, Masayoshi Yamamoto and Eiji Hiraki, "Lagrangian-based Equivalent Circuit of Basic Electric-Field Coupling Wireless Power Transfer System," IEEJ Transactions on Electrical and Electronic Engineering, Vol. 11, Issue S1, pp. S168-S170 (2015).

  44. Yuki Ito, Jun Imaoka and Masayoshi Yamamoto, "Magnetic Saturation Issue of Close-Coupled Inductors in Boost PFC Converters," IEEJ Journal of Industry Applications, Vol. 136-D, No. 1, pp. 88-89 (2016-1)

  45. Kazuhiro Umetani, Masayoshi Yamamoto, "Simple Flux-based Lagrangian Formulation to Model the Non-linearity of Concentrated-winding Switched Reluctance Motors," IET Electronics Letters, Vol. 51, pp. 1984-1986 (2015).

  46. Mitsuru Masuda, Masahiro Kusunoki, Hirokatsu Umegami, Fumiya Hattori and Masayoshi Yamamoto, "Wireless Power Transfer via Electric Field Resonance Coupling", Journal of the Japan Institute of Electronics Packaging, Vol. 18, No. 5, pp. 327-330 (2015)

  47. Jun Imaoka, Wilmar Martinez and Masayoshi Yamamoto, "Coupling Coefficient Improvement and Electromagnetic Induced Noise Reduction using Short-Circuited Winding for a Loosely Coupled Inductor," IEEJ Journal of Industry Applications, Vol. 5 (2016).

  48. Jun Imaoka, Kazuhiro Umetani, Shota Kimura, Wilmar Martinez, Masayoshi Yamamoto, Seikoh Arimura and Tetsuo Hirano, "Magnetic Analysis, Design and Experimental Evaluations for Integrated Winding Coupled Inductor in Interleaved Converters," IEEJ Journal of Industry Applications, Vol. 5 (2016).

  49. Shota Kimura, Jun Imaoka, Wilmar Martinez, Shogo Aoto and Masayoshi Yamamoto, "Downsizing Effects of Integrated Magnetic Components in High Power Density DC-DC Converters for EV and HEV Applications," IEEE Transaction on Industry Applications, Vol. 52, No. 4, pp. 3294-3305 (2016).

  50. Yasuo Sasaki, Tomohiro Sugiwara, Kimiaki Nanamori, Masayoshi Yamamoto: "Current mode analysis in high power density step-up chopper circuit using magnetic coupling", Journal of the Institute of Electrical Engineers of Japan D, Vol. 136, No. 10, pp. 778- 783 (2016) [in Japanese].

  51. Hirokatsu Umegami, Hiroki Ishibashi, Kimihiro Nanamori, Fumiya Hattori and Masayoshi Yamamoto, "Basic Analysis of False Turn-on Phenomenon of Power Semiconductor Devices with Parasitic Inductances," IET Electronics Letters, Volume 52, Issue 13, p. 1158 –1160 (2016).

  52. Masato Sasaki, Hirokatsu Umegami and Masayoshi Yamamoto, "SiC SBDs Selection Method based on Loss Analysis of Boost Converter," IEEJ Transactions on Electrical and Electronic Engineering, Vol. 11, No. S2, pp.S144-S145 (2016).

  53. Kawakami Takki, Masayoshi Yamamoto,: "Proposal of Reduction Method for Mathematical Modeling of Multiphase DC-DC Converter", Journal of the Institute of Electrical Engineers,Vol. 137, No. 3 [in Japanese], (to be published)

  54. Masataka Ishihara, Kazuhiro Umetani, Hirikatsu Umegami, Eiji Hiraki and Masayoshi Yamamoto, “Quasi-Duality between SS and SP Topologies of Basic Electric-Field Coupling Wireless Power Transfer System”, IET Electronics Letters, Volume 52, Issue 25, pp. 2057–2059 (2016)

  55. Fumiya Hattori, Hirokatsu Umegami and Masayoshi Yamamoto, "A Multi-Resonant Gate Drive Circuit of Isolating-Gate GaN HEMTs for Tens of MHz", IET Circuits, Devices & Systems. 53 pp (to be published).

  56. Martínez, W., Cortes, C. A., Munoz, L. E., and Yamamoto, M.,“Design of a 200 kW electric powertrain for a high performance electric vehicle”, Ingeniería e Investigación Journal, 36(3), pp. 66–73 (2016).

  57. H. Kawai, S. Yagi, S. Hirata, F. Nakamura, T. Saito, Y. Kamiyama, M. Yamamoto, H. Amano, V. Unni, and E. M. S. Narayanan,“Low cost high voltage GaN polarization super junction field effect transistors”, Phys. Status Solidi A, 1600834, (2017).

  58. Jun Imaoka, Kenkichiro Okamoto, Shota Kimura, Mostafa Noah, Wilmar Martinez, Masayoshi Yamamoto, and Masahito Shoyama, "A Magnetic Design Method Considering DC-Biased Magnetization for Integrated Magnetic Components Used in Multi-Phase Boost Converters," IEEE Transaction on Power Electronics, Volume: PP, Issue:99, May 2017.

  59. Shota Kimura, Kimihiro Nanamori, Taichi Kawakami, Jun Imaoka and Masayoshi Yamamoto,“Allowable Power Analysis and Comparison for High Power Density DC-DC Converters with Integrated Magnetic Components”, IEEJ Journal of Industry Applications, Vol. 6, No. 6 (2017).

  60. Wilmar Martinez, Camilo Cortes, Jun Imaoka, Kazuhiro Umetani, and Masayoshi Yamamoto, “Total Volume Evaluation of High Power Density Non-Isolated DC-DC Converters with Integrated Magnetics for Electric Vehicles”, IET Power Electronics, PEL-2017-0157.R1, 2017. (To be published)

  61. Toshihiro Iwaki, Seiya Ishiwaki, Takashi Sawada and Masayoshi Yamamoto, “Mathematical Analysis of GaN HEMT False Turn-On Phenomenon”, IET Electronics Letters, ELL-2017-2225.R2, 2017. (To be published)

  62. Masato Sasaki and Masayoshi Yamamoto,“Loss Analysis Based on Constant Gate Current for MOSFET Selection of CCM Boost Converter”,I EEJ Transactions on Electrical and Electronic Engineering, Vol. 12, No. S2, pp.S1390140 (2017).

  63. Mostafa Noah, Kazuhiro Umetani, Jun Imaoka, and Masayoshi Yamamoto,"Lagrangian Dynamics Model and Practical Implementation of an Integrated transformer in Multi-phase LLC Resonant Converter", IET Power Electronics, Vol:11, Issue:2, Page: 339-347. February 2018.

  64. Mostafa Noah, Shun Endo, Hiroki Ishibashi, Kimihiro Nanamori, Jun Imaoka, Kazuhiro Umetani and Masayoshi Yamamoto, “A Current Sharing Method Utilizing Balancing Transformer for a Multiphase LLC Resonant Converter with Integrated Magnetics” IEEE Journal of Emerging and Selected Topics on Power Electronics, Volume:6, Issue:2, Page:977-992, June 2018.

  65. Mostafa Noah, Kazuhiro Umetani, Masayoshi Yamamoto, and Jun Imaoka, "Winding Orientation Method to Minimise the Secondary Leakage of a Gapped Transformer Utilised in LLC Resonant Converter" IET Electronics Letters, Volume: 54, Issue:3, Page:157-159.

  66. Kimihiro Nanamori, Yusuke Sugihara and Masayoshi Yamamoto, “Oscillation Analysis and Current Peak Reduction in Paralleled SiC MOSFETs”, IET Circuits, Devices & Systems, Vol. 12, No. 4, pp.390-395, 2018.

  67. Taichi Kawakami, Toshikazu Harada, Masayoshi Yamamoto, Kazuhiro Umetani: "Proposal of a new control method with high-speed response and robustness in step-up DC-DC converter", Journal of the Institute of Electrical Engineers of Japan C, Vol. 138, No. 4 2018. (In Japanese).

  68. Mostafa Noah, Shota Kimura, Jun Imaoka, Wilmar Martinez, Shun Endo, Masayoshi Yamamoto, and Kazuhiro Umetani, “Magnetic Design and Experimental Evaluation of a commercially available Single Integrated Transformer in Three-phase LLC Resonant Converter” IEEE Transactions on Industry Applications, Volume:54, Issue:6, Page:6190-6204, November/December 2018.

  69. Mostafa Noah, Shota Kimura, Jun Imaoka, Wilmar Martinez, Shun Endo, Masayoshi Yamamoto, and Kazuhiro Umetani, “Magnetic Design and Experimental Evaluation of a commercially available Single Integrated Transformer in Three-phase LLC Resonant Converter” IEEE Transactions on Industry Applications. (Accepted, in press).

  70. D. Mukaiyama, M. Yamamoto, “Dielectric Characteristics Analysis of Aluminum Electrolytic Capacitors Based on Linear Response Function”, J. Electrochem. Soc., vol. 166, pp. E554-E563 (2019)

  71. Yuki Ishikura, Jun Imaoka, Mostafa Noah, Masayoshi Yamamoto, “Comparative Evaluation of Electrical and Calorimetric Methods to Estimate Core Loss in Powder Cores”, IEEJ Journal of Industry Applications, vol. 8, no. 3, pp. 386-393 (2019)

  72. Yuki Ishikura, Jun Imaoka, Mostafa Noah, Masayoshi Yamamoto, “Improved core loss calculation method considering the non-uniform distribution of magnetic flux density in powder cores”, IET Power Electronics, vol. 12, no. 6, pp. 1393-1399 (2019)

  73. Jun Imaoka, Kenkichiro Okamoto, Masahito Shoyama, Yuki Ishikura, Mostafa Noah, Masayoshi Yamamoto, “Modeling, Magnetic Design, Simulation Methods, and Experimental Evaluation of Various Powder Cores Used in Power Converters Considering Their DC Superimposition Characteristics”, IEEE Transactions on Power Electronics, vol. 34, no. 9, pp. 9033-9051 (2019)

  74. Mostafa Noah, Tomohide Shirakawa, Kazuhiro Umetani, Jun Imaoka, Masayoshi Yamamoto, Eiji Hiraki, “Effects of Secondary Leakage Inductance on the LLC Resonant Converter”, IEEE Transactions on Power Electronics, vol. 35, no. 1, pp. 835-852 (2020)

  75. Wilmar Martinez, Camilo Cortes, Jun Imaoka, “Coupled Inductor Optimization of a High Step-up Interleaved Boost Converter”, IEEJ Journal of Industry Applications, vol. 8, no. 6, pp. 984-990 (2020)

  76. 石倉祐樹, 細谷達也, 山本真義, “バリアブルキャパシタによる電圧バランス制御機能を備えた多段FET双方向コンバータ”, 電気学会論文誌D, vol. 140, no. 3, pp. 168-174 (2020)

  77. M. Yamamoto, T. Kakisaka, and J. Imaoka, “Technical Trend of Power Electronics Systems for Automotive Applications”, Japanese Journal of Applied Physics, Vol.59, pp.0805-1 - 0805-13, 2020/4/6 (Open Access)

  78. Y. Ishikura, J. Imaoka, M. Noah, T. Aoki, K. Ito, and M. Yamamoto, “Magnetic Design Method for Multi-Material Inductor to Flatten Efficiency Curve of Power Converters within Wide Load Ranges”, IEEE Transactions on Magnetics, 56巻10号, pp.1-8, 2020/10/10

  79. Hassan M. S., Abdelhakim A., M. Shoyama, J. Imaoka, and Dousoky G. M., “Three-Phase Split-Source Inverter-Fed PV Systems: Analysis and Mitigation of Common-Mode Voltage”, IEEE Transactions on Power Electronics, 35巻 9号 pp.9826-9840, 2020/9/03

  80. S. Jodo, T. Iwaki, K. Uchiyama, Md. Islam, K. Kataoka, Y. Hayasaka, J. Imaoka, and M. Yamamoto, K.Niitsu , “A simple gate driver design for GaN-based switching devices with improved surge voltage and switching loss at 1-MHz operation” ,Japanese Journal of Applied Physics, No.60, SADD02, pp. SAAD02-1-SAAD02-9, 2020.

  81. 石倉祐樹, 細谷達也, 山本真義, “多段FET駆動技術を用いた双方向コンバータ”, 電子情報通信学会論文誌 B, Vol.J103-B, No.4, pp.154-161, 2020/04/01

  82. D. Mukaiyama, and M. Yamamoto, “Effect of Tunnel Pits Radius Variation on the Electric Characteristics of Aluminum Electrolytic Capacitor”, IEICE TRANSACTIONS on Electronics, Vol. E104-C, No.1, pp.22-33, Jan. 2021.

  83. M. S. Hassan, A. Abdelhakim, M. Shoyama, J. Imaoka, G. M. Dousoky, “Parallel Operation of Split-Source Inverters for PV Systems: Analysis and Modulation for Circulating Current and EMI Noise Reduction,” IEEE Transactions on Power Electronics, Vol. 36, No. 8, pp. 9547-9564, 2021.

  84. 片桐 高大, 小川 徹, 山本 真義, 今岡 淳, 佐々木 守, 野田 和寛, “直流ブラシモータに発生するスパイクサージの分析と等価回路を用いた解析モデルの提案,” 電気学会産業応用論文誌Ｄ, 2021 (Accept)

  85. Fumiya Hattori, Yasuhisa Ushida, Kengo Sumiya, Yuta Yanagisawa, Jun Imaoka, Mostafa Noah, Masayoshi Yamamoto, “Frequency Doubler Gate Drive Circuit Suitable for High-Frequency Applications” IEEE Journal of Emerging and Selected Topics in Power Electronics, (Accept)

  86. Tengfei Ou, Mostafa Noah, Mamoru Tsuruya, Seiji Namiki, Koichi Morita, Jun Imaoka, Masayoshi Yamamoto, “Transformer with Adjustable Path-Core Type Inductance for Use in GaN-HEMT LLC Resonant Converter,” IEEJ Journal of Industry Applications (Accept, Open Access)

  87. Masayoshi Yamamoto, Shinya Shirai, Senanayake Thilak, Jun Imaoka, Ryosuke Ishido, Yuta Okawauchi, Ken Nakahara, “An Evaluation of A New Type of High Efficiency Hybrid Gate Drive Circuit for SiC-MOSFET suitable for Automotive Power Electronics System Applications” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Computer Sciences, 2021 (Accept, Open Access)

  88. Tatsuya Aoki, Jun Imaoka, Masayoshi Yamamoto, Kosuke Yoshimoto, “Improving DC superimposition characteristics of powder cores by applying coupled inductors in multi-phase boost converter” IET Power Electronics, https://doi.org/10.1049/pel2.12226 (Accept, Open Access)