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An ac-link bidirectional DC-DC converter with synchronous rectifier


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タイトル: An ac-link bidirectional DC-DC converter with synchronous rectifier
著者: Hirose, Toshiro / Nishimura, Keisuke / Kimura, Takayuki / Matsuo, Hirofumi
発行日: 2010年11月
出版者: IEEE
引用: IECON 2010, pp.351-357; 2010
抄録: This paper describes the principles and characteristics of a novel ac-link bidirectional DC-DC converter with synchronous rectifier, which has a mechanism formed from two bridge-type DC converters that are linked through superposition in additive polarity in series. For an isolated dual active bridge DC-DC converter, which has been studied for many years, the rated voltage of its switching elements is decided according to DC power source voltage and load current. Therefore, as the voltage and current specifications of a converter become higher, physical size becomes larger, conduction and switching losses increase and power efficiency reduces. To solve this problem, the authors devised a unique converter capable of lowering the rated voltage of switching elements, by means of sharing DC power source voltage and load current between two converters. The capacity of the high frequency transformer becomes small, making converter downsizing possible. In addition, further efficiency improvement is facilitated by using MOSFET as switching elements, which have the feature of synchronous rectification. We designed and constructed a 1kW converter system in which these advancements were incorporated, and conducted evaluation testing to verify the conversion efficiency and transient property. The results of testing demonstrated that this DC-DC converter had a conversion efficiency of 98.2% at the rated 1kW, as well as very stable transient operation. A detailed analysis of power flow was also carried out, to identify the characteristics of the converter developed.
記述: IECON 2010 - 36th Annual Conference of IEEE Industrial Electronics : Glendale, AZ, USA, 2010.11.7-2010.11.10 / This is a revised document of the article published in IECON Proceedings 2010, pp.351-357.
URI: http://hdl.handle.net/10069/25180
ISBN: 978-1-4244-5225-5
DOI: 10.1109/IECON.2010.5675003
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: author
出現コレクション:060 会議発表資料

引用URI : http://hdl.handle.net/10069/25180

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