A single phase two switch SEPIC power factor corrected rectifier

摘要

A single phase two switch SEPIC output regulated rectifier is proposed in this paper. The proposed AC-DC converter has power factor correction and input current shaping facility. The rectifier produces buck-boost voltage/current gain. Taking advantage of this characteristic the design of the proposed two switch rectifier has been made separately to operate as buck converter and boost converter. A feedback power factor corrected controller is used for evaluating performance parameters of efficiency, input current total harmonic distortion and input power factor. The simulated results show, the use of separate design to operate the proposed converter in buck and boost region separately, give very high conversion efficiency, very high input power factor and very low input current total harmonic distortion in both buck and boost mode operation of the proposed single phase SEPIC power factor corrected rectifier.