Modeling and Simulation of Three-Phase Voltage Source PWM Rectifier

According to high power factor and accurate outputs DC voltage which are requirements of three-phase rectifier control as known, the research establishment of one outer voltage loop and two inner current loops as double-loop control system. The outer voltage loop could resist disturbance to achieve accurate output; the inner current loop based on space vector control to achieve high power factor. The research has established a high power factor three-phase pulse-width modulation (PWM rectifier simplified mathematical model which can accurately reflects the operational status of PWM rectifier. The corresponding PI parameters setting process is given in the text. Waveforms of simulation and experimental verification have both confirmed the simplified mathematical model and PI parameters of the system are correct.