Presentation 2018-03-16
High frequency decoupling for reduction of common-mode current of three-phase inverter
Shiki Fujii, Tohlu Matsushima, Takashi Hisakado, Osami Wada,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Recently, electric vehicles have been developed rapidly, and three-phase inverters are also used in its motor drive circuits. In the three-phase inverter, common-mode current is generated and causes radiation of the electromagnetic field. However, a bypass capacitor to reduce the common-mode current was not used because it increased the transition time of MOSFET. In this research, the authors propose a design method of reduction of common mode current flowing on the cable to the motor. Using this method, we calculate reduction effect quantitatively. As a result of implementation of the proposed reduction design to a power conversion equipment, the common mode current reduces about 10 dB while suppressing the increase in the transition time of the MOSFET to 10 % or less by putting the bypass capacitor.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Reduction of common-mode current / three-phase inverter / high frequency decoupling / transition time of MOSFET
Paper # EMCJ2017-111
Date of Issue 2018-03-09 (EMCJ)

Conference Information
Committee EMCJ / MICT
Conference Date 2018/3/16(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg.
Topics (in Japanese) (See Japanese page)
Topics (in English) EMC
Chair Osami Wada(Kyoto Univ.) / Masaru Sugimachi(National Cerebral and Cardiovascular Center)
Vice Chair Kensei Oh(Nagoya Inst. of Tech.) / Shinsuke Hara(Osaka City Univ.) / Takahiro Aoyagi(Tokyo Inst. of Tech.)
Secretary Kensei Oh(AIST) / Shinsuke Hara(Mitsubishi Electric) / Takahiro Aoyagi(Niigata Univ.)
Assistant Shinichiro Yamamoto(Univ. of Hyogo) / Chie Sasaki(Panasonic) / Shinobu Nagasawa(Mitsubishi Electric) / Takumi Kobayashi(Yokohama National Univ.) / Shintaro Izumi(Kobe Univ.) / Tomoko Tateyama(Hiroshima Inst. of Tech.) / Ami Tanaka(Ritsumeikan Univ.) / Daisuke Anzai(Nagoya Inst. of Tech.)

Paper Information
Registration To Technical Committee on Electromagnetic Compatibility / Technical Committee on Healthcare and Medical Information Communication Technology
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) High frequency decoupling for reduction of common-mode current of three-phase inverter
Sub Title (in English)
Keyword(1) Reduction of common-mode current
Keyword(2) three-phase inverter
Keyword(3) high frequency decoupling
Keyword(4) transition time of MOSFET
1st Author's Name Shiki Fujii
1st Author's Affiliation Kyoto University(Kyoto Univ.)
2nd Author's Name Tohlu Matsushima
2nd Author's Affiliation Kyushu institute of technology(Kyutech)
3rd Author's Name Takashi Hisakado
3rd Author's Affiliation Kyoto University(Kyoto Univ.)
4th Author's Name Osami Wada
4th Author's Affiliation Kyoto University(Kyoto Univ.)
Date 2018-03-16
Paper # EMCJ2017-111
Volume (vol) vol.117
Number (no) EMCJ-510
Page pp.pp.37-42(EMCJ),
#Pages 6
Date of Issue 2018-03-09 (EMCJ)