A three-phase buck rectifier with high-frequency isolation by single-stage

In this paper the design and experimental results for the isolate unidirectional three-phase buck rectifier are presented. In the previous work this topology was introduced which utilizes a forward/flyback transformer to allow the high-frequency isolation to a three-phase buck rectifier without additional power switches. In order to complement the previously acquired knowledge a review of operation states and modulation, power circuit design and discrete control applied to a prototype are described. Such as, the experimental results to 220 V_rms mains and 2.5 kW at 48 V load with discrete control and unit power factor is presented.