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Paper Abstract and Keywords
Presentation 2022-01-27 10:55
Analysis and Improvement Techniques for Power Consumption of Dual-Active-Bridge DC-DC Converter at Light-Load Condition
Masahiro Tajiri (Nagasaki Univ), Yuichi Ishihama (Microchip), Toshiro Hirose (Nishimu), Yoichi Ishizuka (Nagasaki Univ) EE2021-33
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents an analysis of isolated Dual-Active-Bridge (DAB) DC-DC converters in which the input-output voltage ratio does not match the transformer turns ratio and the power efficiency deteriorates under light load conditions. Especially, when DAB is used as a battery application, the above problem becomes a major issue because the input-output voltage ratio tends to change due to battery voltage fluctuation and the light-load condition is relatively long. The proposed control method can significantly reduce the copper loss when the input-output voltage ratio and the transformer turns ratio are not the same, especially at light loads. In addition, the proposed control method has the advantage that only one variable needs to be controlled in effect. Through practical verification, we have confirmed that the proposed control method can improve the power efficiency at light loads by up to 20%.
Keyword (in Japanese) (See Japanese page) 
(in English) DAB DC-DC Converter / Power Efficiency / Trapezoidal Current Control / Triangular Current Control / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 359, EE2021-33, pp. 12-17, Jan. 2022.
Paper # EE2021-33 
Date of Issue 2022-01-20 (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 EE2021-33

Conference Information
Committee EE  
Conference Date 2022-01-27 - 2022-01-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EE 
Conference Code 2022-01-EE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Analysis and Improvement Techniques for Power Consumption of Dual-Active-Bridge DC-DC Converter at Light-Load Condition 
Sub Title (in English)  
Keyword(1) DAB DC-DC Converter  
Keyword(2) Power Efficiency  
Keyword(3) Trapezoidal Current Control  
Keyword(4) Triangular Current Control  
Keyword(5)  
Keyword(6)  
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1st Author's Name Masahiro Tajiri  
1st Author's Affiliation Nagasaki University (Nagasaki Univ)
2nd Author's Name Yuichi Ishihama  
2nd Author's Affiliation Microchip Japan (Microchip)
3rd Author's Name Toshiro Hirose  
3rd Author's Affiliation Nishimu Electronics Industries Co.Ltd (Nishimu)
4th Author's Name Yoichi Ishizuka  
4th Author's Affiliation Nagasaki University (Nagasaki Univ)
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Speaker Author-1 
Date Time 2022-01-27 10:55:00 
Presentation Time 25 minutes 
Registration for EE 
Paper # EE2021-33 
Volume (vol) vol.121 
Number (no) no.359 
Page pp.12-17 
#Pages 6 
Date of Issue 2022-01-20 (EE) 

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