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Paper Abstract and Keywords
Presentation 2022-03-07 11:45
Experimental study of Magnetic Field Coupling WPT with Inductance Load and Relay Coil
Koki Shibata, Tamami Maruyama, Masashi Nakatsugawa (NIT, Hakodate) WPT2021-23
Abstract (in Japanese) (See Japanese page) 
(in English) The WPT efficiency improvement by inserting a parasitic coil between the transmitter and receiver coils and loading inductance to all coils was experimentally investigated in the magnetic field resonance type wireless power transfer. The results show that both inserting a parasitic coil and loading inductance significantly improved the wireless power transmission efficiency from 7% to 45%. On the other hand, solely inserting parasitic coils or loading inductance exhibited no significant efficiency improvement. The frequency response waveform is almost the same as the analytical value. In order to investigate the reason why the measured efficiency is smaller than the analytical value, we measured the resistance component of the loaded inductance and examined the relationship with the decrease in Q-value.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless Power Transmission / Parasitic coil / Magnetic Coupling / Relay coil / Wireless Power Transmission efficiency / kQ product / WPT /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 414, WPT2021-23, pp. 17-20, March 2022.
Paper # WPT2021-23 
Date of Issue 2022-02-28 (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 WPT2021-23

Conference Information
Committee WPT  
Conference Date 2022-03-07 - 2022-03-08 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WPT 
Conference Code 2022-03-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental study of Magnetic Field Coupling WPT with Inductance Load and Relay Coil 
Sub Title (in English)  
Keyword(1) Wireless Power Transmission  
Keyword(2) Parasitic coil  
Keyword(3) Magnetic Coupling  
Keyword(4) Relay coil  
Keyword(5) Wireless Power Transmission efficiency  
Keyword(6) kQ product  
Keyword(7) WPT  
Keyword(8)  
1st Author's Name Koki Shibata  
1st Author's Affiliation NIT, Hakodate (NIT, Hakodate)
2nd Author's Name Tamami Maruyama  
2nd Author's Affiliation NIT, Hakodate (NIT, Hakodate)
3rd Author's Name Masashi Nakatsugawa  
3rd Author's Affiliation NIT, Hakodate (NIT, Hakodate)
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Speaker Author-1 
Date Time 2022-03-07 11:45:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2021-23 
Volume (vol) vol.121 
Number (no) no.414 
Page pp.17-20 
#Pages 4 
Date of Issue 2022-02-28 (WPT) 

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