Asymmetrical Pulse-Width-Modulated Full-Bridge Secondary Dual Resonance DC-DC Converter

Zhangyong Chen; Qun Zhou; Jianping Xu; Xiang Zhou

Asymmetrical Pulse-Width-Modulated Full-Bridge Secondary Dual Resonance DC-DC Converter

Vol. 14, No. 6, pp. 1224-1232, Nov. 2014

10.6113/JPE.2014.14.6.1224

APWM

PSFB converter

Secondary dual-resonance

Soft-switching technique

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Abstract

A full-bridge secondary dual-resonant DC?DC converter using the asymmetrical pulse-width modulated (APWM) strategy isproposed in this paper. The proposed converter achieves zero-voltage switching for the power switches and zero-current switchingfor the rectifier diodes in the whole load range without the help of any auxiliary circuit. Given the use of the APWM strategy, acirculating current that exists in a traditional phase-shift full-bridge converter is eliminated. The voltage stress of secondary rectifierdiodes in the proposed converter is also clamped to the output voltage. Thus, the existing voltage oscillation of diodes in traditionalPSFB converters is eliminated. This paper presents the circuit configuration of the proposed converter and analyzes its operatingprinciple. Experimental results of a 1 kW 385 V/48 V prototype are presented to verify the analysis results of the proposedconverter.

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Cite this article

[IEEE Style]

Z. Chen, Q. Zhou, J. Xu, X. Zhou, "Asymmetrical Pulse-Width-Modulated Full-Bridge Secondary Dual Resonance DC-DC Converter," Journal of Power Electronics, vol. 14, no. 6, pp. 1224-1232, 2014. DOI: 10.6113/JPE.2014.14.6.1224.

[ACM Style]

Zhangyong Chen, Qun Zhou, Jianping Xu, and Xiang Zhou. 2014. Asymmetrical Pulse-Width-Modulated Full-Bridge Secondary Dual Resonance DC-DC Converter. Journal of Power Electronics, 14, 6, (2014), 1224-1232. DOI: 10.6113/JPE.2014.14.6.1224.