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Paper Abstract and Keywords
Presentation 2026-06-03 14:45
Improvement of Misalignment Tolerance in 85kHz DWPT Systems using Meta-Transmission Line Structure
Yuan JU, Minoru Okada (NAIST) WPT2026-11
Abstract (in Japanese) (See Japanese page) 
(in English) Abstract: In Dynamic Wireless Power Transfer (DWPT), misalignment between transmitting and receiving coils due to vehicle movement causes a decrease in the coupling coefficient, leading to reduced power transfer efficiency. This paper proposes a novel approach to improve misalignment tolerance for an 85kHz DWPT system. Specifically, a meta-transmission line structure is introduced by placing a "reflection coil" between adjacent transmitter coils to optimize the electromagnetic coupling characteristics. We evaluated the system using a dynamic power transfer model where the receiver coil moves within a range of -400 mm to +400 mm. The results show that the proposed method effectively suppresses the degradation and fluctuation of the coupling coefficient during movement compared to conventional methods. This indicates the potential to maintain stable and high-efficiency power transfer over a wide range even during vehicle movement.
Keyword (in Japanese) (See Japanese page) 
(in English) dynamic wireless power transfer / DWPT / magnetic link optimization / reflection coils / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 53, WPT2026-11, pp. 8-12, June 2026.
Paper # WPT2026-11 
Date of Issue 2026-05-27 (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 WPT2026-11

Conference Information
Committee WPT  
Conference Date 2026-06-03 - 2026-06-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Online (changed from Ishigaki Civic Hall) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Power Transfer, etc 
Paper Information
Registration To WPT 
Conference Code 2026-06-WPT 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of Misalignment Tolerance in 85kHz DWPT Systems using Meta-Transmission Line Structure 
Sub Title (in English)  
Keyword(1) dynamic wireless power transfer  
Keyword(2) DWPT  
Keyword(3) magnetic link optimization  
Keyword(4) reflection coils  
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1st Author's Name Yuan JU  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Minoru Okada  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Speaker Author-1 
Date Time 2026-06-03 14:45:00 
Presentation Time 20 minutes 
Registration for WPT 
Paper # WPT2026-11 
Volume (vol) vol.126 
Number (no) no.53 
Page pp.8-12 
#Pages 5 
Date of Issue 2026-05-27 (WPT) 

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