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2020 Volume 46 Pages
33-35
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Kenichi Nishijima
2020 Volume 46 Pages
36-43
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In this research, from the viewpoint of EMC (EMI and immunity), we evaluate the load-side immunity of switching power supply in resistive load and examine the countermeasures. In the previous report, EMI countermeasures revealed that the frequency spreading factor (Δf / RBW, Δf: spread width) affects the reduction effect. Since noise is bidirectional (EMI and immunity are in opposite directions), we considered that EMI countermeasures could be effective as a means of immunity countermeasures, and focused on the possibility of immunity countermeasures using frequency spreading.
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Yuki Ishikura, Tatsuya Hosotani, Masayoshi Yamamoto
2020 Volume 46 Pages
44-50
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This paper presents an energy management storage system with a multi-stage FET bidirectional converter. The
proposed system is constructed by a bidirectional converter using series connected FETs, and it realizes highly energy management that maximizes battery performance. By calculating the power loss using the converter performance index FOM (Figure of merit), it is shown that the proposed configuration can be possible to reduce the power loss 70% compared to the conventional configuration. In the proposed system, using a power control method that reduces the charging current, the battery charging losses can be reduced 60%. The analysis results show that the proposed system can achieve a charging energy efficiency of 96.9%, and reduce the yearly CO2 emission of 33%.
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Keisuke Kawashima, Hideki Omori, [in Japanese], Toshimitsu Morizane, H ...
2020 Volume 46 Pages
51-58
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Junnosuke Nohara, Hideki Omori, Masahito Tsuno, Toshimitsu Morizan ...
2020 Volume 46 Pages
59-67
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This paper deals with a single-ended bidirectional WPT system which ensures productivity and compatibility for
practical application. The previous system has a problem of transfer power dramatic change by circuit small variations. Authors studied about power fluctuation factors, then proposed has been phase shift control as the proposed solution.
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Taichi Iwanaga, Hideki Omori, Shougo Hirooka, Kunihiro Sakamoto, T ...
2020 Volume 46 Pages
68-76
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In this paper, we propose a new SiC-VMOSFET single-ended converter that realizes a low-cost, compact and
lightweight wireless EV charger, which is the key device for the popularization of electric vehicles in recent years. A three-fold transfer power and 1/6 power device loss have been achieved by an improved drive pattern, a newly developed V-groove trench SiC-MOSFET, and a new type of low switching loss circuit topology.
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Yuto Komatsu, Hideki Omori, Ryohei Senju , Toshimitsu Morizane, Hid ...
2020 Volume 46 Pages
77-86
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Electric vehicles (EV) are expected to solve the environmental problems because of high-efficiency operation without CO2 and
NOx emissions. In order to create a charging infrastructure by installing equipment in such as locations as carports in private homes, the
wireless battery charging system is very suitable. Furthermore, the wireless EV charger is suitable for autonomous vehicles and is expected
to contribute to the spread of electric vehicles. However, misalignment between the power feeding and the power receiving coils causes
decreases in transmission power and efficiency. In this paper, proposed is a new method of position detection by analyzing voltage difference
of search coils which can obtain the required accuracy with a simple configuration.
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Fuminori Nakamura, Akihiro Matsuda, Toshifumi Ise
2020 Volume 46 Pages
87-94
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Due to the configuration of separated SubModule (SM) capacitors, factory operation test and system test at installation site for STAtic synchronous COMpensator (STATCOM) using Modular Multilevel Converter (MMC)’s require an energization of capacitors from AC bus. However, from the stability point of view of the connected power system, the impact on the AC bus is desired to be minimum. The authors propose novel test methods and performed the tests using practical type of MMC STATCOM.
The test results proved that the STATCOM performance can be tested based on requirements of IEC 62927 and CIGRE TECHNICAL BROCHURES 697.
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Yuki KATAOKA, Satoshi SHIOYAMA, Shin-ichi MOTEGI
2020 Volume 46 Pages
95-101
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2020 Volume 46 Pages
102-104
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Ryo Aoki, Takayuki Kusumi, Eiji Hiraki, Kazuhiro Umetani
2020 Volume 46 Pages
105
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Asuka Takahashi, Daichi Makihara, Kosuke Kato , Ryohei Yabuki , Hiro ...
2020 Volume 46 Pages
106
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Kakeru KINAKA, Shin-ichi MOTEGI
2020 Volume 46 Pages
107
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Yusei Nakano, Hideki Omori, Toshimitsu Morizane, Hidetoshi Matayos ...
2020 Volume 46 Pages
108
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Shougo Hirooka, Hideki Oomori, Kunihiro Sakamoto, Toshimitsu Moriza ...
2020 Volume 46 Pages
109
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Yuuichi Yoshida, Ryo Ito, Hiroaki Kakigano
2020 Volume 46 Pages
110
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Kenjiro Shimizu , Hideto Yonemori , Hiromasa Takeno
2020 Volume 46 Pages
111
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Yuya Hirano, Yuta Wakasa, Shigeyuki Takagi
2020 Volume 46 Pages
112
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~Experimental Consideration -First Report-~
Hiroyuki Takahashi, Somi Takeuchi, Yukio Kaneda, Yoshitaka Kawabat ...
2020 Volume 46 Pages
113
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Masahiro Akima, Akihiro Konishi, Kazuhiro Umetani, Eiji Hiraki
2020 Volume 46 Pages
114
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Kosuke Kobayashi, Eiji Hiraki
2020 Volume 46 Pages
115
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Tatsuya Takahashi, Hideki Omori, Masahito Tsuno, Toshimitsu Morizane, ...
2020 Volume 46 Pages
116
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Kosuke Maeda, Utena Yasuda, Masakazu Michihira
2020 Volume 46 Pages
117
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Mamoru Takami, Masataka Minami
2020 Volume 46 Pages
118
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Kentaro Ueda, Yukinori Inoue, Shigeo Morimoto, Masayuki Sanada
2020 Volume 46 Pages
119
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Yudai Yamashita, Hiroaki Kakigano
2020 Volume 46 Pages
120
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Daichi Kato, Yuto Manaka, Yasuhito Sakakibara, Kohei Sugiyama, Taka ...
2020 Volume 46 Pages
121
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Hiroki Nishimura, Shigeo Morimoto, Masayuki Sanada, Yukinori Inoue, ...
2020 Volume 46 Pages
122
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Tadaaki Miyake, Yoshitaka Kawabata
2020 Volume 46 Pages
123
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Tomoya Suekawa, Hikari Nitta, Yuya Goto, Nobukazu Hoshi, Kazuhito ...
2020 Volume 46 Pages
124
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Mischa Aleksej Krueger, Toshiji Kato, Kaoru Inoue
2020 Volume 46 Pages
125
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