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A consideration of bidirectional superposed dual active bridge dc-dc converter


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タイトル: A consideration of bidirectional superposed dual active bridge dc-dc converter
著者: Hirose, Toshiro / Matsuo, Hirofumi
発行日: 2010年 6月
出版者: IEEE
引用: PEDG 2010, pp.39-46
抄録: This paper describes the principles and characteristics of a novel bidirectional superposed dual active bridge dc-dc converter with an ac-link transformer, which has a mechanism formed from two bridge-type converters that are linked through superposition in additive polarity in series. Conventionally, for an isolated dual active bridge dc-dc converter, the rated voltage of its switching elements is decided according to the dc power source voltage and load current. Therefore, as the voltage and current specifications of a dc-dc converter become higher, physical size becomes larger, conduction and switching losses increase and power efficiency reduces. To solve this problem, the authors devised the proposed dc-dc converter capable of lowering the rated voltage of switching elements, by means of sharing dc power source voltage and load current between two converters. Further, the capacity of the high frequency transformer becomes small, making the dc-dc converter more efficient and smaller. We designed and constructed a 1kW dc-dc converter prototype, and conducted performance evaluation testing. As a result, a conversion efficiency of 96.6% at a rated output of 1kW was obtained. A detailed analysis of power flow was also carried out, to identify the characteristics of the converter developed.
記述: 2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010; Hefei; 16 June 2010 through 18 June 2010
キーワード: Ac-link transformer / Bidirectional dc-dc converter / Superposed dual active bridge / ZVS/ZVC
URI: http://hdl.handle.net/10069/24537
ISBN: 978-142445670-3
権利: © 2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
資料タイプ: Conference Paper
原稿種類: publisher
出現コレクション:060 会議発表資料

引用URI : http://hdl.handle.net/10069/24537

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