Simulation Research on Direct Power Control for Three-Phase PWM Rectifier

According to working principle and structure of three-phase PWM rectifier, the mathematical model of three-phase PWM rectifier is established in three-phase static coordinate.The unfixed switch frequency direct power control strategy of voltage orientation is proposed.After analyzing control structure, the simulation model is established using MATLAB/SIMULINK.The results of simulation show the proposed control algorithm is simple, improves rectifier power factor and reduces the harmonic content.