移相控制对称半桥变换器软开关条件

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Abstract The symmetry half-bridge bidirectional converter’s zero voltage switching (ZVS) is achieved by the resonance between the circuit’s parasitic elements, including parasitic capacitors of the switches and the leak inductance of the transformer. In application, the additional resonance elements could help the ZVS operation if the parasitic elements are not enough. The topology and operation principle of symmetry half-bridge bidirectional converter is briefly introduced, which could easily achieve zero voltage switching (ZVS). Based on the analysis of its operation modes, the realization of ZVS is indicated. By analyzing the equivalent circuit of the ZVS operation mode, the relationship between the circuit’s resonance elements’ parameters and the converter’s steady operation requirements is built, which could be used to choose the switch’s parasitic capacitors and the additional resonance elements. The experimental results verify the illustrated conditions.

Key words： Half-bridge DC-DC converter phase-shifted control soft switching zero voltage switching condition quasi resonance

Received: 10 November 2010 Published: 07 March 2014

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TM461

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	Jiang Wei
	Hu Renjie
	Huang Huichun

Cite this article:

Jiang Wei,Hu Renjie,Huang Huichun. ZVS Condition of Symmetry Half-Bridge Converter with Phase-Shifted Control[J]. Transactions of China Electrotechnical Society, 2011, 26(11): 8-14.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I11/8

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