A simple ZVT auxiliary circuit for full-bridge based bridgeless single-phase PFC with hybrid PWM modulation scheme

This paper proposes a zero-voltage-transition (ZVT) technique for the full-bridge based bridgeless single-phase PFC. An auxiliary circuit consists of a small auxiliary inductor and two active switches is placed in parallel with the main filter inductor. The proposed ZVT technique has several advantages over the existing ZVT schemes including low ripple of the filter inductor current, natural zero-current-switching (ZCS) for the auxiliary...