Abstract：The traditional three-phase pulse width modulation（PWM）rectifier requires six power switches.

Due to the shoot-through problem between two switches on the same bridge arm，the control difficulty is increased

and overall system design becomes more complicated. A half-controlled three-phase PWM rectifier topology was

used to achieve a three-phase rectifier. Only three power switches were used. The three switches were controlled by

the same driving signal. The driving signal was generated by a dedicated controller，and the control circuit was

simple. An experimental prototype was built using SiC MOSFETs as power switches. The experimental results

show that the rectifier could operate at a higher switching frequency and the inductor and the capacitor are greatly

reduced，thus the volume of the rectifierand the product cost are reduced，the conversion efficiency is improved and total harmonic distortion is low.

      Key words：half-controlled three-phase PWM rectifier；SiC MOSFET；total harmonic distortion（THD）