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Paper Abstract and Keywords
Presentation 2020-07-03 13:30
Foreign Metal Detection Robust to Coil Misalignment in Wireless Power Transfer System
Han Xu, Takeda Kodai, Mizoguchi Tomoya, Koseki Takafumi (UTokyo) WPT2020-16
Abstract (in Japanese) (See Japanese page) 
(in English) This paper will first introduce a new method using the phase of a pair of symmetrical coils to detect the metal object in Wire-less Power Transfer(WPT) system. The theoretical analysis and the numerical study show that this method will not be affected when the receiving coil moves to two-thirds of the coil length. The experiment shows that this method can detect the coin shape metal but has a risk of failure due to the receiving coil misalignment. A series circuit design and an improved method have been proposed to make the method robust to the receiving coil position. Therefore, this method can detect the coin shape metal with the receiving coil two-thirds of the coil length far away from the coil alignment position.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless Power Transfer / Metal Object Detection / Symmetrical coil / Phase Detect / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 85, WPT2020-16, pp. 7-12, July 2020.
Paper # WPT2020-16 
Date of Issue 2020-06-26 (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)
Download PDF WPT2020-16

Conference Information
Committee EMCJ EMD WPT  
Conference Date 2020-07-03 - 2020-07-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WPT 
Conference Code 2020-07-EMCJ-EMD-WPT 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Foreign Metal Detection Robust to Coil Misalignment in Wireless Power Transfer System 
Sub Title (in English)  
Keyword(1) Wireless Power Transfer  
Keyword(2) Metal Object Detection  
Keyword(3) Symmetrical coil  
Keyword(4) Phase Detect  
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1st Author's Name Han Xu  
1st Author's Affiliation The University of Tokyo (UTokyo)
2nd Author's Name Takeda Kodai  
2nd Author's Affiliation The University of Tokyo (UTokyo)
3rd Author's Name Mizoguchi Tomoya  
3rd Author's Affiliation The University of Tokyo (UTokyo)
4th Author's Name Koseki Takafumi  
4th Author's Affiliation The University of Tokyo (UTokyo)
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Speaker Author-1 
Date Time 2020-07-03 13:30:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2020-16 
Volume (vol) vol.120 
Number (no) no.85 
Page pp.7-12 
#Pages 6 
Date of Issue 2020-06-26 (WPT) 

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