Comparison of PWM techniques for back to back converters in PSCAD

Abstract

This article presents the simulation and comparison between the space vector pulse width modulation and sinusoidal pulse width modulation techniques for back to back converters with a decoupling control strategy, PSCAD/EMTDC for simulation purpose is used. Also, a study of steady state and transient performance characteristics of the system is carried out for both techniques. The simulation results show that the transient response is similar for both schemes, and the SVPWM technique has the advantage less harmonic content, which it is useful in applications that require a low harmonic level for avoiding overheats and malfunction in sensitive systems.