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Paper Abstract and Keywords
Presentation 2019-03-08 09:00
Coupler Design Criterion Considering Maximum Transmission Efficiency by kQ Product and Element Power Loss of Matching Circuit
Hikaru Kitaoka, Daiki Yaginuma, Ryoichi Baba, Takashi Ohira (TUT) WPT2018-81
Abstract (in Japanese) (See Japanese page) 
(in English) In the wireless power transmission system, efficiency improvement of the coupler is being studied for improving entire transmission efficiency. However, many of the studies optimize only the efficiency of the coupler alone. In many cases, a matching circuit is required for the coupler. The element power loss of the matching circuit depends on the impedance of the coupler. To improve the transmission efficiency, the shape of the coupler should be best designed by simultaneously taking into account the transmission efficiency of the coupler itself and that of the matching circuit. This report shows a general-purpose criterion for high efficiency coupler design. We use the theoretical maximum transmission efficiency stemming from the kQ product that works for any coupling scheme. Also, for the matching circuit, we employ the theoretical upper bound of power efficiency that works for configuration of the matching circuit. The theoretical transmission efficiency calculated from these two is used as a criterion, and its efficacy is confirmed by simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) wireless power transfer / coupler / matching circuit / maximum power efficiency / design criterion / kQ / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 484, WPT2018-81, pp. 89-93, March 2019.
Paper # WPT2018-81 
Date of Issue 2019-02-28 (WPT) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
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 WPT  
Conference Date 2019-03-07 - 2019-03-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Univ. Uji Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Power Transfer, SPS Technology, etc. 
Paper Information
Registration To WPT 
Conference Code 2019-03-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Coupler Design Criterion Considering Maximum Transmission Efficiency by kQ Product and Element Power Loss of Matching Circuit 
Sub Title (in English)  
Keyword(1) wireless power transfer  
Keyword(2) coupler  
Keyword(3) matching circuit  
Keyword(4) maximum power efficiency  
Keyword(5) design criterion  
Keyword(6) kQ  
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Keyword(8)  
1st Author's Name Hikaru Kitaoka  
1st Author's Affiliation Toyohashi University of Technology (TUT)
2nd Author's Name Daiki Yaginuma  
2nd Author's Affiliation Toyohashi University of Technology (TUT)
3rd Author's Name Ryoichi Baba  
3rd Author's Affiliation Toyohashi University of Technology (TUT)
4th Author's Name Takashi Ohira  
4th Author's Affiliation Toyohashi University of Technology (TUT)
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Speaker Author-1 
Date Time 2019-03-08 09:00:00 
Presentation Time 20 minutes 
Registration for WPT 
Paper # WPT2018-81 
Volume (vol) vol.118 
Number (no) no.484 
Page pp.89-93 
#Pages 5 
Date of Issue 2019-02-28 (WPT) 

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