Analysis of Phase-leg Crosstalk Problem of Three-phase PMSM Driver with SiC MOSFETs

Aiming at the characteristics of silicon carbide (SiC) metal oxide semiconductor field effect transistors (MOSFETs), which have lower threshold voltage and lower switching energy losses. The principle of phase-leg crosstalk problem is analyzed in single-phase bridge circuit firstly. Then, this paper discusses the influence of space vector pulse width modulation (SVPWM) algorithm to phase-leg crosstalk problem in a three-phase permanent magnet synchronous motor (PMSM) driver. Finally, the experimental devices based on PMSM are designed. The experimental results verify the conclusion effectively.