Study on two modulation methods of PWM rectifier

The modulation function model of space vector PWM(SVPWM) was analyzed and the internal relations between sinusoidal PWM(SPWM) and space vector PWM were found.Based on the simulation results of the MATLAB,the fundamental current waveforms of SPWM and SVPWM modulation methods were proved to be sine wave in the three-phase voltage rectifier,which can be used in the current loop control of PWM rectifier.