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Paper Abstract and Keywords
Presentation 2016-01-28 10:55
Consideration on Core for Wireless Charging Coil Using Magnetic Field Analysis Mixed with Circuit Synthesis Theory
Kenji Shodai (Hiroshima Univ.), Masako Kita (CYBERNET SYSTEMS), Hitoshi Kawaguchi, Kouich Yamanoue (IMASEN ELECTRIC INDUSTRIAL), Futoshi Kuroki (Kure College) WPT2015-63
Abstract (in Japanese) (See Japanese page) 
(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) 
(in English) Electric vehicle / Wireless charging / Spiral coil / Ferrite core / Iron plate / Eddy-current loss / Magnetic field analysis / Circuit Synthesis Theory  
Reference Info. IEICE Tech. Rep., vol. 115, no. 428, WPT2015-63, pp. 1-3, Jan. 2016.
Paper # WPT2015-63 
Date of Issue 2016-01-21 (WPT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee EMCJ WPT  
Conference Date 2016-01-28 - 2016-01-29 
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 
Paper Information
Registration To WPT 
Conference Code 2016-01-EMCJ-WPT 
Language Japanese 
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)
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Speaker Author-1 
Date Time 2016-01-28 10:55:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2015-63 
Volume (vol) vol.115 
Number (no) no.428 
Page pp.1-3 
#Pages 3 
Date of Issue 2016-01-21 (WPT) 

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