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Paper Abstract and Keywords
Presentation 2014-11-19 10:25
A Novel 6.78MHz Experimental Results of a ZVS Push-pull Class-E Direct-Current-Resonance Wireless Power Transfer
Toru Yoshikawa (Doshisha Univ.), Tatsuya Hosotani (Murata Manufacturing), Koji Fujiwara (Doshisha Univ.) WPT2014-58
Abstract (in Japanese) (See Japanese page) 
(in English) The direct current resonance is a new technology that makes it possible to convert DC electric energy into electromagnetic field energy. We present zero voltage switching push-pull class-E direct-current-resonance wireless power transfer to get more power than single class-E circuit. We design direct-current-resonance wireless power transfer using the result of magnetic field analysis about power-transmission side coil and power-receiving side coil. System characteristics is showed by use of analysis and experiment in 6.78MHz. Push-pull class-E wireless power transfer system attains 81.8% of the maximum DC-DC power efficiency and 8.92W of the receiving power. In case of same input voltage, push-pull class-E wireless power transfer system can supply power four times as much as single one.
Keyword (in Japanese) (See Japanese page) 
(in English) direct current resonance / electromagnetic resonance field / zero voltage switching / class-E / push-pull / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 310, WPT2014-58, pp. 43-48, Nov. 2014.
Paper # WPT2014-58 
Date of Issue 2014-11-11 (WPT) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 EE WPT  
Conference Date 2014-11-18 - 2014-11-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Doshisha University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WPT 
Conference Code 2014-11-EE-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Novel 6.78MHz Experimental Results of a ZVS Push-pull Class-E Direct-Current-Resonance Wireless Power Transfer 
Sub Title (in English)  
Keyword(1) direct current resonance  
Keyword(2) electromagnetic resonance field  
Keyword(3) zero voltage switching  
Keyword(4) class-E  
Keyword(5) push-pull  
1st Author's Name Toru Yoshikawa  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Tatsuya Hosotani  
2nd Author's Affiliation Murata Manufacturing Co., Ltd. (Murata Manufacturing)
3rd Author's Name Koji Fujiwara  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2014-11-19 10:25:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2014-58 
Volume (vol) vol.114 
Number (no) no.310 
Page pp.43-48 
Date of Issue 2014-11-11 (WPT) 

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