基于空间矢量调制三相电压型PWM整流系统的仿真

Simulation of 3-phase Voltage Source PWM Rectifier Based on the Space Vector Modulation

正弦脉冲宽度调制(SPWM)技术应用于传统的电压型PWM整流中,SPWM的控制波形可由相间解耦得到。然而,这个过程复杂且直流电压利用率很低。本文提出了一种在同步参考坐标下的三相电压模型的控制策略,空间矢量脉冲宽度调制(SVPWM)。整流器具有高质量的直流侧电压和功率因数。文章提供了MATLAB/SIMULINK的仿真模型。结果证实了模型的正确性及其控制方法。仿真结果表明,与传统的SPWM方法相比,这种方法能明显提高系统的动态性能。

The Sinusoidal Pulse Width Modulation（SPWM） technique is used in the conventional voltage-source PWM rectifier,and the SPWM control waveform can be obtained by the inter-phase decoupling.However,the process is complex and the utilization ratio of the DC voltage is low.This paper proposes the Space Vector Pulse Width Modulation（SVPWM） control scheme for three-phase voltage source PWM rectifier, which is based on its model in synchronous reference frame.The DC bus voltage and power factor of the PWM rectifier are regulated with high performance.The paper presents the MATLAB/SIMULINK simulation model.The results confirm the validity of the model and its control method.Compared with the traditional SPWM method,the simulation results show that this method can improve dynamic performance of the system obviously.