High Power Factor Three-Phase Three-Switch Step-Down Converter

Abstract

A high-power-factor three-phase rectifier is proposed in this paper. It operates as a step-down converter, and employs three switches driven by the same signal. A complementary-drive switch is series-connected to the output, avoiding a short-circuit loop whenever main switches are on. Operation analysis is presented, and design equations are derived. Simulation and experimental results are also included, to validate the analysis.