Presentation 2019-07-19
Circuit Modeling of a Wireless Power Transfer System by the Impedance Expansion Method
Nozomi Haga, Masaharu Takahashi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The impedance expansion method (IEM) is a circuit modeling technique for electrically very small devices based on the method of moments. In the authors' previous work, a circuit model of wireless power transfer systems was obtained by utilizing the IEM and eigenmode analysis. However, its applicable frequency is only at approximately the operating frequency of the system because it considers only the fundamental modal current of the coils. In this report, a novel multimode circuit model that considers multiple modal currents is proposed, and its applicable frequencies in a broadband frequency range are discussed.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) wireless power transfer / method of moments / impedance expansion method / eigenmodes
Paper # WPT2019-24
Date of Issue 2019-07-12 (WPT)

Conference Information
Committee EMCJ / EMD / WPT
Conference Date 2019/7/19(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg.
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Kensei Oh(Nagoya Inst. of Tech.) / Shinichi Wada(TMC System) / Masaharu Takahashi(Chiba Univ.)
Vice Chair Atsuhiro Nishikata(Tokyo Inst. of Tech.) / Yoshiki Kayano(Univ. of Electro-Comm.)
Secretary Atsuhiro Nishikata(Tokyo Inst. of Tech.) / Yoshiki Kayano(Denso) / (Fuji Electric)
Assistant Nami Sasaki(Seiwa Electric MFG) / Hiroyoshi Shida(Tokin) / Sho Muroga(Akita Univ.) / Yuichi Hayashi(NAIST) / Nozomi Haga(Gunma Univ.) / Osamu Kagaya(AGC)

Paper Information
Registration To Technical Committee on Electromagnetic Compatibility / Technical Committee on Electromechanical Devices / Technical Committee on Wireless Power Transfer
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Circuit Modeling of a Wireless Power Transfer System by the Impedance Expansion Method
Sub Title (in English)
Keyword(1) wireless power transfer
Keyword(2) method of moments
Keyword(3) impedance expansion method
Keyword(4) eigenmodes
1st Author's Name Nozomi Haga
1st Author's Affiliation Gunma University(Gunma Univ.)
2nd Author's Name Masaharu Takahashi
2nd Author's Affiliation Chiba University(Chiba Univ.)
Date 2019-07-19
Paper # WPT2019-24
Volume (vol) vol.119
Number (no) WPT-135
Page pp.pp.13-17(WPT),
#Pages 5
Date of Issue 2019-07-12 (WPT)