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A Novel ZCS PWM Boost Converter with operating Dual Mode  

김태우 (금오공과대학교 전자제어공학과)
김학성 (금오공과대학교 전자제어공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.7, no.4, 2002 , pp. 346-352 More about this Journal
Abstract
A novel Zero Current Switching(ZCS) Pulse Width Modulation(PWM) boost converter with dual mode for reducing two rectifiers reverse recovery related losses is proposed. The switches of the proposed converter are operating to work alternatively turn-on and turn-off with soft switching condition In the every cycle and the proposed converter reduces the reverse recovery current, which is related switching losses and EMI problems, of the free-wheeling diode$(D_1, D_2)$ by adding the resonant inductor Lr, in series with the switch $S_1$. The switching components$(S_1, S_2, D, D_1)$ in the proposed boost converter are subjected to minimum voltage and current stresses same as those in their PWM counterparts because there are no additional active switches and resonant elements compared with the conventional ZVT PWM $converters^{[2]}$. The operation of the proposed converter, in this paper, is analyzed and to verify the feasibility of the characteristics is built and tested.
Keywords
ZCS; PWM; Soft Switching; Reverse Recovery Current; Boost.;
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