A new single phase power factor corrector converter

Abstract

This paper presents the basic principles of operation, the analysis, simulation and experimental results of a new single-phase power factor corrector circuit for AC-DC power supplies. This converter consists basically in a three diodes and capacitor arrangement connected at the output terminals of the input rectifier. The charge of these capacitors is forced by operating an electronic switch that controls the power flow from the AC line through an inductor with a secondary winding, the same way as in a flyback converter topology. This process enables input current shaping and with adequate control, sinusoidal input current is obtained. In order to validate the theoretical and simulation results, a 50 W lab prototype has been developed.