A single phase PFC 3 kW converter using a three-state switching cell

This paper presents a novel high efficiency single phase PFC 3 kW converter using a three-state switching cell operating in continuous conduction mode. The main advantages of this converter are low conduction and commutation losses and that the frequency of the reactive elements is twice of the switching frequency. Due to these features, the proposed converter presents reduced input and DC-link current ripple, smaller inductor and output filter capacitor, low weight and reduced volume. The converter is suitable for high power applications (>1.5 kW) as preregulator stage due to the presence of one autotransformer inside of the switching cell. Theoretical analysis and experimental results demonstrate the feasibility of the proposed rectifier.