Presentation 2016-01-28
Consideration on Core for Wireless Charging Coil Using Magnetic Field Analysis Mixed with Circuit Synthesis Theory
Kenji Shodai, Masako Kita, Hitoshi Kawaguchi, Kouich Yamanoue, Futoshi Kuroki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The power transmission efficiency of the spiral coil used in wireless charging for electric vehicle, if back of the coil has a metal such as an iron plate, will be decreased by the eddy current loss. This effect may be increased, in case that there is a positional shift between the power transmitting and receiving coil. In order to reduce the effect, a ferrite core needs to layout at the back of the coil. However the core is desired as small as possible for cost and weight reduction. We confirmed the size and thickness of the core on the power transmission efficiency can be calculated using Magnetic Analysis Mixed with Circuit Synthesis, which match with the test results. In conclusion, we have revealed an optimal core size.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Electric vehicle / Wireless charging / Spiral coil / Ferrite core / Iron plate / Eddy-current loss / Magnetic field analysis / Circuit Synthesis Theory
Paper # WPT2015-63
Date of Issue 2016-01-21 (WPT)

Conference Information
Committee EMCJ / WPT
Conference Date 2016/1/28(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Kumamoto National Colle. Technology
Topics (in Japanese) (See Japanese page)
Topics (in English) Communication, Wireless Power Transmission, EMC
Chair Hideaki Sone(Tohoku Univ.) / Naoki Shinohara(Kyoto Univ.)
Vice Chair Osami Wada(Kyoto Univ.)
Secretary Osami Wada(Okayama Univ.) / (Hitachi)
Assistant Atsuhiro Takahashi(Toyota Central R&D Labs.) / Yoshiki Kayano(Akita Univ.) / Yusaku Katsube(Hitachi) / Takashi Hikagae(Hokkaido Univ.) / Tsunayuki Yamamoto(Yamaguchi Univ.)

Paper Information
Registration To Technical Committee on Electromagnetic Compatibility / Technical Committee on Wireless Power Transfer
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Consideration on Core for Wireless Charging Coil Using Magnetic Field Analysis Mixed with Circuit Synthesis Theory
Sub Title (in English)
Keyword(1) Electric vehicle
Keyword(2) Wireless charging
Keyword(3) Spiral coil
Keyword(4) Ferrite core
Keyword(5) Iron plate
Keyword(6) Eddy-current loss
Keyword(7) Magnetic field analysis
Keyword(8) Circuit Synthesis Theory
1st Author's Name Kenji Shodai
1st Author's Affiliation Hiroshima University(Hiroshima Univ.)
2nd Author's Name Masako Kita
2nd Author's Affiliation CYBERNET SYSTEMS Co.,Ltd(CYBERNET SYSTEMS)
3rd Author's Name Hitoshi Kawaguchi
3rd Author's Affiliation IMASEN ELECTRIC INDUSTRIAL Co.,Ltd(IMASEN ELECTRIC INDUSTRIAL)
4th Author's Name Kouich Yamanoue
4th Author's Affiliation IMASEN ELECTRIC INDUSTRIAL Co.,Ltd(IMASEN ELECTRIC INDUSTRIAL)
5th Author's Name Futoshi Kuroki
5th Author's Affiliation National Institute of Technology,Kure College(Kure College)
Date 2016-01-28
Paper # WPT2015-63
Volume (vol) vol.115
Number (no) WPT-428
Page pp.pp.1-3(WPT),
#Pages 3
Date of Issue 2016-01-21 (WPT)