An AC-DC single-stage full-bridge converter with phase-shift PWM control

An AC-DC single stage voltage-fed PWM full-bridge converter is proposed in the paper. The converter can simultaneously perform input power factor correction and DC-DC conversion using conventional phase-shift PWM and can maintain a primary side DC bus voltage of less than 450 V even at a high input line voltage of 265 V. This is a combination of features that few if any other converters of the same type have. In the paper, the operation of the proposed converter is explained in detail, its outstanding features and its design are discussed. Experimental results that confirm the feasibility of the converter and its ability to meet IEC 1000-3-2 Class D standards for electrical equipment are also presented in the paper.