Abstract：An improved zero voltage switching(ZVS) power factor correction converter is proposed and analyzed in this paper. The optimal design guideline is presented. By using an auxiliary switch, a small auxiliary inductor and a clamp capacitor, ZVS for all switches are achieved. To eliminate the voltage ringing across the output rectifier diode, a small diode VDc is added to clamp the voltage. A 500W PFC prototype with universal input is built up to verify the theoretical analysis. The efficiency can reach 95.5% at 90V input with full load.
[1] Hua G, Lea C, Lee F C. Novel zero voltage transition PWM converter[C]. Proceeding of PESC, 1992: 55-61. [2] Zhao Qun, Tao Fengfeng, Xu Peng, et al. Improving performance of continuous current mode boost converters for power factor correction[C]. Proceeding of APEC, 2001: 642-647. [3] Da Cunha Duarte, Barbi C M I. A new ZVS-PWM active-clamping high power factor rectifier: analysis, design, and experimentation[C]. Proceeding of APEC, 1998: 230-236. [4] John A Bassett. New, zero voltage switching, high frequency boost converter for power factor correc- tion[C]. In Proceeding Intelec, 1995: 813-820. [5] Chen Gang, Xu Dehong, Feng Bo, et al. Minimum voltage active clamping DC-DC converter[C]. Proceed- ing of PESC, 2002: 442-445. [6] Xu David M, Yang C, Ma L. A novel single phase active clamped ZVT PWM PFC converter[C]. Proceeding of APEC, 2000: 456-459. [7] Wu Xinke, Zhang Junming, Ye Xin, et al. Analysis and derivations for a family ZVS converter based on a new active clamp ZVS cell[J]. IEEE Transactions on Industrial Electronics, 2008, 55(2): 773-781. [8] Feng Bo, Xu Dehong. 1-kW PFC converter with compound active-clamping[J]. IEEE Transactions on Power Electronics, 2005, 20(2): 324-331.
2011, Vol. 26 
