Comparative Analysis of SPWM & SVPWM fed Induction Motor Drive

Abstract

Due to changing era of science & technology, there have been tremendous improvement in the Power
electronic system. Different power converters have been available that helps in conversion of power from one form into
another. Owing to this ac drives are also being used along with dc for several industrial applications. Conversion of
power can be done according to the load requirement. An inverter is one such type of power converter that converts dc
power into ac power. So it is used for driving ac loads in those areas where dc power is available. Pulse width
modulation is a technique which helps in obtaining variable output from inverter. Sinusoidal PWM and Space vector
PWM techniques are popular among the different techniques used. From the study of space vector modulation technique
it has been found that space vector modulation technique utilizes DC bus voltage more efficiently and generates less
harmonic distortion as compared to Sinusoidal PWM technique. In this paper the models for Sinusoidal PWM and Space
vector PWM are made and simulated using MATLAB/SIMULINK software. The comparison of their results of simulation
is done on the basis of output voltage and total harmonic distortion for different modulation indexes.