A single stage high power factor 3 phase 60 V/100 A power supply using a line-side interphase transformer and an isolated push-pull converter

Abstract

A novel single stage, high power factor three-phase power supply which consists of a high frequency, line-side interphase transformer and a high switching frequency, isolated, DC-DC Current Sourced Push-pull Converter is presented. Besides the high power factor it presents soft switching both in turn-on and turn-off of the power and auxiliary switches. The high power factor and low harmonic content is reached by means of the Line Interphase Transformer which is in turn switched at a high frequency switching by means of a push-pull converter. The main analytical equations, simulation and experimental results are presented.