Practical Design Consideration and Experimental Validation of SiC MOSFET-based 50kW Three-phase PWM Rectifier for EV Charging Station

As the demand for EV charging stations increases, the necessity has been raised for high power three-phase PWM rectifier using SiC MOSFETs. In a three-phase PWM rectifier, because of the fast switching speed and high current ratings with SiC MOSFET, the noise effects and temperature rise should be considered. Also, a controller with high reliability is required because the instability of the controller leads to deterioration of power factor and hardware damage. Therefore, the proposed design considerations are explained in the case of filter, controller, and hardware design. Moreover, through the experimental results, the importance of the proposed design consideration is emphasized. Consequently, experimental validation is performed by measuring the efficiency, power factor, and total harmonic distortion for various load conditions of the designed three-phase PWM rectifier.