Simulation and Analysis of Three Phase VSI using THIPWM and SVPWM Techniques

Abstract

Abstract

PWM methods is the most active topic for controlling the power electronic circuit. Several PWM approaches are more and more applied in various innovative applications of power electronics in industries that need greater performance of the system. These days the most relevant PWM method for 3 - phase VSI are SPWM, THIPWM and SVPWM. Out of these three methods SPWM is one of the naivest modulation schemes that can gather definitely in normally used analog circuit. Here major problem associated with SPWM is that it consists higher THD along with no capability to operate in over modulation region at lesser value of switching frequency. Better technique to control THD other than SPWM are SVPWM and THIPWM. For applications with higher frequency and during over modulation region SVPWM technique gives reduced THD in comparison of SPWM technique. The performance of above two methods are deliberated, studied and its comparison with switching frequency, modulation index is given in this paper. To obtain sine wave harmonic must be reduced. PWM methods are simulated for different loads and FFT analysis is used to detect the overall harmonic interference. In this article, the benefits of the DC bus voltage utilization are higher than the PWM technology.

Keywords: Third harmonic injection pulse width modulation (THIPWM), pulse width modulation (PWM), sinusoidal pulse width modulation (SPWM), space vector pulse width modulation (SVPWM), voltage source inverter (VSI), total harmonic distortion (THD)

Cite this Article

Vijay Shankar, Ankur Kumar, Pankaj Kumar Singh. Simulation and Analysis of Three Phase VSI using THIPWM and SVPWM Techniques. Journal of Instrumentation Technology & Innovations. 2019; 9(3): 16–30p.