Isolated AC/DC Converter Using Soft-Switching Technique

Abstract

This paper presents a high-frequency isolated AC/DC converter using the soft-switching technique. The AC/DC converter consists of a matrix converter for transforming three-phase AC voltage to high-frequency AC voltage, a high-frequency transformer and an AC/DC rectifier. In order to reduce the switching loss, soft switching at every commutation of the matrix converter and AC/DC converter is achieved. The effectiveness of the proposed converter and the control scheme was verified by experiments.