Simulation & analysis of three phase voltage source inverter using four semiconductor switches

This paper analyzes the application of Sine Triangle pulse width Modulation (SPWM) and Space Vector pulse width Modulation (SVM) scheme for a three phase voltage source inverter using four semiconductor switches. Elimination of two switches will reduce cost, complexity, size and switching losses of the system. In this paper equations are developed for the application of both the switching schemes on Four Switch Three Phase Inverter (FSTPI). Simulation verification is carried out in PSIM and results are shown in agreement with the analysis.