| Abstract |
This paper compares the losses and efficiency of three-phase two-level rectifier and TNPC for the application of electric vehicle charger. The emerging SiC MOSFETs with superior switching characteristics expands the applications of power switches in various systems. In this paper, the efficiency of the most applied state-of-art AC/DC converter, i.e. three-phase active rectifier, has been evaluated based on commercially available power switches, both with Si IGBT and SiC MOSFET. Their loss distribution and efficiency are compared in our work. Moreover, thanks to the higher efficiency and lower total harmonic distortion, T-type neutral point clamped (TNPC) converter is considered as a promising alternative to its two-level counterpart. We also investigated the efficiency of two types of TNPC, namely the hybrid TNPC and SiC MOSFET-based TNPC. The simulation results are summarized and compared. |
