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http://dx.doi.org/10.6113/JPE.2014.14.6.1224

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

Chen, Zhangyong (Department of Electronic Eng., Southwest Jiaotong University)
Zhou, Qun (Department of Electronic Engineering and Information Technology, Sichuan University)
Xu, Jianping (Department of Electronic Eng., Southwest Jiaotong University)
Zhou, Xiang (Department of Electronic Eng., Southwest Jiaotong University)
Publication Information
Journal of Power Electronics / v.14, no.6, 2014 , pp. 1224-1232 More about this Journal
Abstract
A full-bridge secondary dual-resonant DC-DC converter using the asymmetrical pulse-width modulated (APWM) strategy is proposed in this paper. The proposed converter achieves zero-voltage switching for the power switches and zero-current switching for the rectifier diodes in the whole load range without the help of any auxiliary circuit. Given the use of the APWM strategy, a circulating current that exists in a traditional phase-shift full-bridge converter is eliminated. The voltage stress of secondary rectifier diodes in the proposed converter is also clamped to the output voltage. Thus, the existing voltage oscillation of diodes in traditional PSFB converters is eliminated. This paper presents the circuit configuration of the proposed converter and analyzes its operating principle. Experimental results of a 1 kW 385 V/48 V prototype are presented to verify the analysis results of the proposed converter.
Keywords
APWM; PSFB converter; Secondary dual-resonance; Soft-switching technique;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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