Modeling, simulation and implementation of the single-phase unity power factor active rectifier for minimizing the input current harmonic distortions

This paper presents a modelling, simulation and Implementation of topology of single-phase AC-DC active rectifier having power factor correction (PFC). This converter topology is evaluated on the basis of performance and its salient features are discussed to analyze its applicability. The technique not only helps to develop a deeper understanding of this converter but also to evaluate performance and feasibility of control strategy and topological features without fabrication of an actual system. This paper also describes technique for minimizing the input current distortion of current-controlled single-phase boost rectifier. A PWM strategy that selectively switches between positive unipolar PWM and negative unipolar PWM also Phase-adjusted unipolar PWM, is shown to produce the lowest current distortion levels using two converters. To validate the viability of the scheme, detailed experimental studies are carried out on a 2-kW laboratory prototype.