A new three-phase rectifier circuit using the partial switching strategy for a high power factor and a harmonic restraint

ABSTRACT This paper describes a new three-phase rectifier circuit using the partial switching strategy. A passive method to be composed of a diode rectifier circuit and an active method with the high-frequency switching were used for the circuit to convert from A.C. into D.C. mainly. However, the passive method and the active method had a problem of low power factor and low efficiency, each other. In contrast, the partial switching strategy realizes high efficiency and high power factor and low harmonics to a moderate degree. Therefore the single-phase partial switching voltage doubler rectifier circuit was applied to air conditioner. By the superior performance, most air conditioner adopts the partial switching strategy. In this paper, circuit configuration and a principle of operation and the experimental result of the three-phase partial switching rectifier circuit are reported