Investigations of Ramp Based 2LI and Modulating Wave Based 3LI Fed Induction Motor Drive

This paper presents Ramp Based (RB) and Modulating Wave Based (MWB) Space Vector Pulse Width Modulation (SVPWM) for two level inverter (2LI)and three level inverter(3LI) fed Induction Motor (IM)drive. Both PWM methods incorporates a space reference vector, to locate and create the desired sinusoidal-shaped waveform. The 2 and 3 level Voltage Source Inverter(VSI) are compared on basis of steady state and dynamic results. Total Harmonic distortion analysis is carried out to substantiate the betterment of multilevel inverter. Detailed algorithms of RB-2LI and MWB3LI logic is implemented using Matlab Simulink on a IM drive.