Comparative analysis of direct power control and direct power control with space vector modulation of PWM rectifier

Abstract

This paper presents a comparative analysis of direct power control (DPC) and direct power control with space vector modulation (DPC-SVM) of three phase PWM rectifier. In the first strategy has been developed to control the instantaneous active and reactive power directly by selecting the optimum switching state of the PWM rectifier. The main of this strategy is the improve the power factor and the total harmonic distortion. In the second strategy called the direct power control with space vector modulation (DPC-SVM), the use of SVM technique for the converter switching signal generation is based on the power control model of the converter in synchronous coordinates (dq), with the aim to ensuring a stable active power exchange, a good dynamic response, constant switching frequency and in particular it provides a sinusoidal line currents. Simulation and results has shown that both control structures achieve good performances.