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Paper Abstract and Keywords
Presentation 2021-03-05 13:30
[Special Talk] A Study of Magnetic Resonance Wireless Power Transfer to 10 m with Multiple Parasitic Coils in Seawater
Ryosuke Hasaba, Katsuya Okamoto, Souichi Kawata, Kazuhiro Eguchi, Koyanagi Yoshio (Panasonic) MW2020-95
Abstract (in Japanese) (See Japanese page) 
(in English) An autonomous underwater vehicle (AUV) is used for exploring marine resources and monitoring infrastructure facilities. An AUV needs to be lifted out of the water to have them replaced or recharged because it is powered by batteries. Thus, wirelessly feeding power to an AUV in the sea would improve the efficiency of marine activities. However it is difficult to wirelessly power an object in the sea because seawater has high conductivity. We study the electromagnetic field in lossy materials such as a conductor, a coil cover, and seawater. We design a wireless magnetic resonance-based power transfer system with multiple coils using bandpass filter theory. We perform experiments on this system and measure the coil coupling coefficient, efficiency, and wattage. The results confirm wireless power transfer exceeding a distance of 10 m in an undersea setting. We verify the transfer efficiency by changing the receiving-coil position on the central axis of the transfer coils.
Keywords wireless power transfer, inductive coupling, seawater, multiple coils.
Keyword (in Japanese) (See Japanese page) 
(in English) wireless power transfer / inductive coupling / seawater / multiple coils / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 422, MW2020-95, pp. 22-27, March 2021.
Paper # MW2020-95 
Date of Issue 2021-02-26 (MW) 
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 MW  
Conference Date 2021-03-05 - 2021-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2021-03-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Magnetic Resonance Wireless Power Transfer to 10 m with Multiple Parasitic Coils in Seawater 
Sub Title (in English)  
Keyword(1) wireless power transfer  
Keyword(2) inductive coupling  
Keyword(3) seawater  
Keyword(4) multiple coils  
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1st Author's Name Ryosuke Hasaba  
1st Author's Affiliation Panasonic Corporation (Panasonic)
2nd Author's Name Katsuya Okamoto  
2nd Author's Affiliation Panasonic Corporation (Panasonic)
3rd Author's Name Souichi Kawata  
3rd Author's Affiliation Panasonic Corporation (Panasonic)
4th Author's Name Kazuhiro Eguchi  
4th Author's Affiliation Panasonic Corporation (Panasonic)
5th Author's Name Koyanagi Yoshio  
5th Author's Affiliation Panasonic Corporation (Panasonic)
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Speaker Author-1 
Date Time 2021-03-05 13:30:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2020-95 
Volume (vol) vol.120 
Number (no) no.422 
Page pp.22-27 
#Pages 6 
Date of Issue 2021-02-26 (MW) 

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