PWM methods for two-phase inverters

This article focuses on simple space-vector PWM (SPWM) methods for two-leg, three-leg, and four-leg inverters that can be applied to three phase induction motor drives (TPIM). First, a carrier-based PWM method for a two-leg inverter was proposed on the basis of the conventional SPWM method. Second, a carrier-based PWM method for a four leg inverter that used a double triangular carrier wave was proposed. Third, a carrier-based PWM method for a three-leg inverter was proposed as a replacement for a conventional SVPWM method. Digital calculations using the PSIM software package are performed to investigate the effectiveness of the proposed PWM method