Bridgeless buck-boost PFC rectifier with a bidirectional switch

Abstract

This paper introduces a bridgeless buck-boost PFC rectifier with a bi-directional switch. The bridgeless design eliminates the need for the traditional line bridge rectifier and the associated losses. The proposed PFC also employs a tapped inductor to attain low output voltage and avoid operation at extreme duty ratio. The paper presents theoretical analysis and control strategy of the proposed rectifier. The feasibility of the proposed rectifier was verified by simulation and experimental results.