负载和输入电压自适应零电压软开关全桥变换器

doi:10.19595/j.cnki.1000-6753.tces.211163

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Abstract This paper presents a zero-voltage-switching (ZVS) full-bridge DC-DC converter operating in a wide input voltage and load range. The proposed converter is derived from the addition of a simple LC auxiliary circuit to the traditional phase-shifted full-bridge (PSFB) converter. The auxiliary current is controlled through a narrow frequency change, and the circulating current loss can be minimized under the ZVS operating conditions. The use of a narrow frequency change can effectively adjust the auxiliary current without significantly affecting the design and control of the main circuit. The steady-state performance of the converter is analyzed in detail; the mathematical model of the converter is established, which can be directly used for the optimized design and precise control of the converter. The experimental results are in good agreement with the analysis results.

Key words： Circulating loss full-bridge converter load adaptive input voltage adaptive resonant circuit zero-voltage-switching (ZVS)

Received: 29 July 2021

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TM46

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	Yang Xiaoguang
	Wang Dexin
	Jia Zhe
	Gao Zheng

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Yang Xiaoguang,Wang Dexin,Jia Zhe等. A Load and Input Voltage Adaptive Zero-Voltage-Switching Full-Bridge Converter[J]. Transactions of China Electrotechnical Society, 2022, 37(12): 3061-3072.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211163 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I12/3061

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