Analysis of Modified Single-Phase PFC AC-DC Buck-Boost Converter

Abstract

This paper researches a modified single-phase power-factor-correction (PFC) AC-DC buck-boost converter, which is operated in discontinuous conduction mode (DCM) by using a simple control scheme to achieve almost unity power factor, low total harmonic distortion of input current (THD i ), and step-up/down DC output voltage for universal input voltage applications. This converter has low voltage stresses on the power devices than the conventional PFC AC-DC buckboost converter. The steady-state analysis of voltage gain and boundary operating condition are discussed in detailed. Finally, the simulation results are shown to verify the performance of this modified buck-boost converter.

A Three-Level Isolated fuzzy controlled AC-DC PFC Power Converter Topology with Reduced Number of Switches

“…along these lines, this has facilitated for design and improvement of single-level enter % converters. The type of converters have been chosen as respects to energy rating related to low-energy programming, the flyback and ahead of time converters specifically used for trim the enter bleeding edge with the convey converters [1], [2], [5]. regardless, for preposterous energy utility, one in the entire situation roughly is unmarried-degree ac-dc complete-length converter which has been proposed [3], regularly fabulous justification converters are gathered into assorted sorts viz; 1) contemporary dealt with converter, 2) Voltage dealt with converters.…”