Simulation and Performance of Induction Motor Drive Using SVPWM Technique

Due to the advancement in power semiconductor devices and microprocessors, PWM inverters have been used in today's motor drives. The most commonly used PWM techniques are Sinusoidal pulse width modulation (SPWM) and Space vector pulse width modulation (SVPWM). Sinusoidal PWM technique is complex in digital implementation. Space Vector Pulse Width Modulation (SVPWM) is a digital technique, which increases the output voltage capability and increases DC bus utilization voltage. The output of the inverter can contain large number of voltage harmonics. As aim is to get low THD with sinusoidal output voltage waveform it is proposed to use LC filter. Sinusoidal output waveform is fed to an Induction Motor (IM). An AC drive system performance was simulated and evaluated for variable speed operation from no-load to rated speed under constant torque operation. The performance of motors has been analyzed from no load and full load in this paper. The focus was based on the simulation of power circuits using MATLAB/SIMULINK software