Predictive current control of three-phase PWM rectifier under the condition of non-ideal source voltage

Abstract

This paper presents the predictive current control of three-phase PWM rectifier under the condition of unsymmetrical and non-sinusoidal source voltage. Two parts are included: one is the determination of input current reference and the other is the calculation of the duty cycle of the switching device. The determination of the input current reference is base on the rotating coordinate transformation of the three-phase source voltage. The resulting current reference is in phase with the fundamental positive-sequence component of the source voltage. The duty cycle of the switching device is calculated directly so that the rectifier input current can track its reference over one switching period. The simulation and experimental results validated the effectiveness of the proposed control approach.