一种辅助电流可控的移相全桥零电压开关PWM变换器

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Abstract A novel PWM phase-shifted full-bridge converter with controlled auxiliary circuit is proposed featuring zero-voltage-switching (ZVS) of active switches over a wide range of input voltage and output load. In contrast to conventional techniques, the current through the auxiliary inductor of the proposed converter is controlled by the load current. Therefore, the ZVS operation over the wide conversion range is achieved without significantly increasing full-load conduction loss. The principle of the operation is described and the consideration in the design of auxiliary circuit are discussed. Performance of the proposed converter is verified with experiment results on 1kW, 100 kHz full-bridge converter.

Key words： Full-bridge converter soft-switching zero-voltage-switching auxiliary inductor

Received: 14 July 2008 Published: 04 March 2014

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TM46

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	Zhang Xin
	Chen Wu
	Ruan Xinbo

Cite this article:

Zhang Xin,Chen Wu,Ruan Xinbo. A Novel ZVS PWM Phase-Shifted Full-Bridge Converter With Controlled Auxiliary Circuit[J]. Transactions of China Electrotechnical Society, 2010, 25(3): 81-88.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2010/V25/I3/81

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