효율개선을 위한 새로운 AC/DC 컨버터에 관한 연구

Abstract

DC power supplies are extensively used for most of electrical and electronic appliances such as in computers, television, audio sets and others. Power supplies make the load compatible with its power source. The presence of non linear loads results into low power factor and high harmonics operation of the power system. Several techniques for power factor correction and harmonic reduction have been reported.

In this paper a bridgeless boost converter is proposed which results in improved power factor and reduced harmonics content in input line currents as compared to full bridge rectifiers.

This bridgeless boost converter eliminates the line-voltage bridge rectifier in conventional boost converter, so that the conduction loss is reduced.

The effectiveness of the proposed scheme is verified by the computer simulation using software PSIM.