一种低环流损耗的宽范围ZVS移相全桥变换器

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Abstract A new high-efficient phase-shifted full-bridge (PSFB) converter is proposed in this paper. The conventional phase-shift full-bridge converter gains more attentions in medium or high power applications, because of its features high conversion efficiency and high power density. However, the hold-up-time requirement limits its operating duty ratio in normal state, and the conduction loss increases caused by circulating current. Therefore, by introducing the auxiliary coupled inductor and the storage capacitor at primary side, as well as the auxiliary winding and the auxiliary switching at secondary side, the proposed converter can not only achieve the ZVS operation in the full load range but also reduce the conduction loss. Finally, the operational principle and analysis of the proposed converter are presented and verified by the 120W/24V, 100kHz prototype.

Key words： Zero voltage switching full bridge converter circulation loss hold up time

Received: 29 October 2013 Published: 30 November 2015

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TM46

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	Articles by authors
	Chen Zhong
	Wang Yang
	Li Mengnan

Cite this article:

Chen Zhong,Wang Yang,Li Mengnan. Wide-Range Zero Voltage Switching Phase-Shifted Full-Bridge Converter with Low Circulation Loss[J]. Transactions of China Electrotechnical Society, 2015, 30(22): 71-79.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I22/71

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