Steady-State Analysis of a Single-phase Modified Bridgeless Boost Rectifier in DCM

Abstract

This article presents an analysis and design of an AC-DC Boost single-phase converter operating in discontinuous conduction mode (DCM) with output voltage regulation and power factor correction (PFC). The topology dispenses the rectifier bridge reducing the conduction losses and, however, it is already known in the literature, there is no previously steady-state modeling presented for this operation mode. Furthermore, the article presents a comparison between the converter with the other two common used topologies for the same kind of application. All results were validated with a 500 W prototype, with a universal input 100 – 220 VAC and 450 VDC voltage output. The results presented nearby 96% of efficiency.