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Paper Abstract and Keywords
Presentation 2023-05-26 11:00
Development of a High-Efficiency Wireless Power Transfer System for Taiwan's First Autonomous Electric Boat Charging
Ching-Ming Lai (NCHU), Tomokazu Mishima (Kobe Univ.) EE2023-2
Abstract (in Japanese) (See Japanese page) 
(in English) This study presents the system architecture and demonstration of a high-efficiency wireless power transfer (WPT) system for Taiwan’s first autonomous electric boat built by Taiwan Ship and Ocean Industries R&D Center (SOIC). We adopt a series-parallel resonance compensation design in the proposed WPT system to achieve high-efficiency power conversion. Due to the boat's shaking, along with coil misalignment and the low coupling coefficient, a set of transmission coils with a flat magnetic field is designed to improve the system’s efficiency. Furthermore, the characteristic evaluation and numerical analysis of transmission coils are made by CST Studio Suite®. For the power transmission, the inverter utilizes the phase shift modulation control to produce the magnetic resonance and transmit energy from the transmitter coil to the receiver coil, followed by a full-bridge rectifier with an LC filter. The experimental results show that the developed system can transfer 7 kW for a large air gap (20 cm), and the highest efficiency is up to 94.62%. The developed system operating frequencies complies with the SAE J2954 standard. Besides, the developed system operates at an average power transfer efficiency that is higher than 90% and provides good horizontal misalignment tolerance up to ±100 mm. In summary, the results validate that Taiwan’s first WPT system integrated with the autonomous electric boat, evidenced on the Kaohsiung Love River.
Keyword (in Japanese) (See Japanese page) 
(in English) WPT / autonomous electric boat / large air gap / misalignment / series-parallel resonance compensation / flat magnetic field / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 54, EE2023-2, pp. 7-11, May 2023.
Paper # EE2023-2 
Date of Issue 2023-05-19 (EE) 
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 EE2023-2

Conference Information
Committee EE IEE-HCA  
Conference Date 2023-05-26 - 2023-05-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Switching power supply, New industrial and home appliance for power, others 
Paper Information
Registration To EE 
Conference Code 2023-05-EE-HCA 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of a High-Efficiency Wireless Power Transfer System for Taiwan's First Autonomous Electric Boat Charging 
Sub Title (in English)  
Keyword(1) WPT  
Keyword(2) autonomous electric boat  
Keyword(3) large air gap  
Keyword(4) misalignment  
Keyword(5) series-parallel resonance compensation  
Keyword(6) flat magnetic field  
Keyword(7)  
Keyword(8)  
1st Author's Name Ching-Ming Lai  
1st Author's Affiliation National Chung Hsing University (NCHU)
2nd Author's Name Tomokazu Mishima  
2nd Author's Affiliation Kobe University (Kobe Univ.)
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Speaker Author-1 
Date Time 2023-05-26 11:00:00 
Presentation Time 25 minutes 
Registration for EE 
Paper # EE2023-2 
Volume (vol) vol.123 
Number (no) no.54 
Page pp.7-11 
#Pages 5 
Date of Issue 2023-05-19 (EE) 

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