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Paper Abstract and Keywords
Presentation 2015-04-17 16:15
Experimental Evaluation of Coupling Coefficient Measurement in Three-Hop Wireless Power Transfer via Magnetic Resonance Coupling
Keisuke Oyamada, Yuichi Miyaji, Hideyuki Uehara (Toyohashi Univ. of Tech.) WPT2015-20 MW2015-20
Abstract (in Japanese) (See Japanese page) 
(in English) In wireless power transfer via magnetic resonance coupling, we need to know a coupling coefficient in advance for impedance matching and power division to multiple receivers.
In this paper, we focus on multi-hop WPT using intermediates and we propose measurement method of coupling coefficient between a receiver and the intermediate that is adjacent to the receiver in three-hop WPT.
In our method, we assume coil parameters and other coupling coefficients are known.
Our proposed method converts a measured input impedance into the desired coupling coefficient.
We evaluate the proposed method by using a circuit simulation, an electromagnetic simulation and an experiment.
The circuit simulation results show that coupling coefficient is measured correctly regardless of strength of coupling.
However, the electromagnetic simulation and the experiment results show that our proposed method has an error of up to about 14% in strong coupling range.
Keyword (in Japanese) (See Japanese page) 
(in English) Multi-hop Wireless Power Transfer / Magnetic Resonance Coupling / Coupling Coefficient / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 3, WPT2015-20, pp. 103-108, April 2015.
Paper # WPT2015-20 
Date of Issue 2015-04-09 (WPT, MW) 
ISSN Print edition: ISSN 0913-5685    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 WPT2015-20 MW2015-20

Conference Information
Committee WPT MW  
Conference Date 2015-04-16 - 2015-04-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave technologies for Wireless Power Transfer, Superconducting Microwave technologies, Microwave technologies, etc. 
Paper Information
Registration To WPT 
Conference Code 2015-04-WPT-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental Evaluation of Coupling Coefficient Measurement in Three-Hop Wireless Power Transfer via Magnetic Resonance Coupling 
Sub Title (in English)  
Keyword(1) Multi-hop Wireless Power Transfer  
Keyword(2) Magnetic Resonance Coupling  
Keyword(3) Coupling Coefficient  
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1st Author's Name Keisuke Oyamada  
1st Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. of Tech.)
2nd Author's Name Yuichi Miyaji  
2nd Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. of Tech.)
3rd Author's Name Hideyuki Uehara  
3rd Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. of Tech.)
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Speaker Author-1 
Date Time 2015-04-17 16:15:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2015-20, MW2015-20 
Volume (vol) vol.115 
Number (no) no.3(WPT), no.4(MW) 
Page pp.103-108 
#Pages 6 
Date of Issue 2015-04-09 (WPT, MW) 

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