A family of isolated single-stage ZVS-P WM active-clamping converters with high power factor are proposed. These new converters can achieve high power factor, low current harmonic distortion, tight output voltage regulation, and high efficiency. In the converters, the switches are operated with zero voltage switching (ZVS) and active clamping, They may become very attractive in low or medium power applications. In this paper, derivatioii of the single-stage converters is presented, and a specific example is designed and implemented to veri& the feasibility of the converters.
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