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Paper Abstract and Keywords
Presentation 2014-06-06 16:45
Electromagnetic Field Suppression in Polyphase Wireless Power Transfer via Magnetic Resonance Coupling
Hiroki Narita, Takehiro Imura, Hiroshi Fujimoto, Yoichi Hori (Univ. of Tokyo) WPT2014-31
Abstract (in Japanese) (See Japanese page) 
(in English) It is expected that Wireless Power Transfer (WPT) can be a power feeding method where wiring is difficult.
The power transmitting distance is up to a few meter via Magnetic Resonance Coupling.
It is longer than the transmitting distance via conventional induction method,
However, effects of Electromagnetic Field (EMF) on organism and communication should be concerned.
Shielding the antennas for EMF leakage reduction conflicts long transmitting distance.
In this paper, we investigated symmetric N-phase WPT system as EMF leakage suppression in WPT.
We showed that the proposal method has about -20 dB EMF leakage suppression ability in theory and simulation, and about -10 dB EMF leakage suppression ability in experiment.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless Power Transfer (WPT) / Electromagnetic Compatibility (EMC) / Magnetic Resonance Coupling / Electromagnetic field leakage / Polyphase Current / 3-Phase Current / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 72, WPT2014-31, pp. 39-44, June 2014.
Paper # WPT2014-31 
Date of Issue 2014-05-30 (WPT) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Committee WPT  
Conference Date 2014-06-06 - 2014-06-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ. of Tokyo 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Power Transfer, etc 
Paper Information
Registration To WPT 
Conference Code 2014-06-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Electromagnetic Field Suppression in Polyphase Wireless Power Transfer via Magnetic Resonance Coupling 
Sub Title (in English)  
Keyword(1) Wireless Power Transfer (WPT)  
Keyword(2) Electromagnetic Compatibility (EMC)  
Keyword(3) Magnetic Resonance Coupling  
Keyword(4) Electromagnetic field leakage  
Keyword(5) Polyphase Current  
Keyword(6) 3-Phase Current  
1st Author's Name Hiroki Narita  
1st Author's Affiliation The University of Tokyo (Univ. of Tokyo)
2nd Author's Name Takehiro Imura  
2nd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
3rd Author's Name Hiroshi Fujimoto  
3rd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
4th Author's Name Yoichi Hori  
4th Author's Affiliation The University of Tokyo (Univ. of Tokyo)
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Speaker Author-1 
Date Time 2014-06-06 16:45:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2014-31 
Volume (vol) vol.114 
Number (no) no.72 
Page pp.39-44 
Date of Issue 2014-05-30 (WPT) 

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