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Paper Abstract and Keywords
Presentation 2015-06-12 13:45
Development of Small Size Self-Resonant Resonator mounting Dielectric Material for Wireless Power Transfer via Magnetic Resonant Coupling
Shinichiro Haneishi, Yoshinori Tsujimura (NTK), Takehiro Imura (UTokyo) WPT2015-24
Abstract (in Japanese) (See Japanese page) 
(in English) We have developed small-size resonators installed the dielectric material in a space between coils in order to increase stray capacitance. Thus no external capacitor is needed. In addition, the effect reduces electric leakage. Simulation results for two types (a solenoid-type and a spiral-type) of resonators with a practical size for vehicles and without the external capacitor show that resonant frequency of 62 kHz and 92 kHz are obtained, respectively. Though experimental results did not reach the range of required resonant frequency, capacitance values of nanofarad-order were realized. The spiral-type resonator achieved 90% efficiency at high-power transfer and electric leakage suppression was -12dB (1/4) of an external resonance-type.
Keyword (in Japanese) (See Japanese page) 
(in English) EV / PHEV / Wireless Power Transfer / Magnetic Resonant Coupling / Self-Resonant / Dielectric Material / Electric Leakage /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 82, WPT2015-24, pp. 19-24, June 2015.
Paper # WPT2015-24 
Date of Issue 2015-06-05 (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)
Download PDF WPT2015-24

Conference Information
Committee WPT  
Conference Date 2015-06-12 - 2015-06-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ. of Tokyo 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Power Transfer, Electric Vehicle Technology, etc 
Paper Information
Registration To WPT 
Conference Code 2015-06-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of Small Size Self-Resonant Resonator mounting Dielectric Material for Wireless Power Transfer via Magnetic Resonant Coupling 
Sub Title (in English)  
Keyword(1) EV  
Keyword(2) PHEV  
Keyword(3) Wireless Power Transfer  
Keyword(4) Magnetic Resonant Coupling  
Keyword(5) Self-Resonant  
Keyword(6) Dielectric Material  
Keyword(7) Electric Leakage  
1st Author's Name Shinichiro Haneishi  
1st Author's Affiliation NGK SPARK PLUG CO., LTD. (NTK)
2nd Author's Name Yoshinori Tsujimura  
2nd Author's Affiliation NGK SPARK PLUG CO., LTD. (NTK)
3rd Author's Name Takehiro Imura  
3rd Author's Affiliation The University of Tokyo (UTokyo)
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Speaker Author-1 
Date Time 2015-06-12 13:45:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2015-24 
Volume (vol) vol.115 
Number (no) no.82 
Page pp.19-24 
Date of Issue 2015-06-05 (WPT) 

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