Redundant three-phase AC to DC converter using single-phase CUK rectifier module with minimized DC bus capacitance

This paper presents a redundant three-phase ac to dc converter using single-phase CUK rectifier module with nearly power factor and minimized dc bus capacitance based on power balance control technique. The focus of the proposed control strategy is to reduce the dc bus capacitance value under condition step load change from 10% (75W) to 100% (750W). Using power balance control technique does minimized dc bus capacitance, inductor current sharing, redundant operation, high power factor and tight dc bus voltage works on the principle of modular three-phase rectifier with parallel single-phase CUK rectifier module. Simulation results are used to illustrate the operation and performance features of the modular three-phase rectifiers.