Comparative Evaluation of PWM Techniques Used at Mega 328/p with PI Control for Inverter-Fed Induction Motor

This paper presents three different PWM techniques used at mega 328/p with PI controller employed for three-phase inverter-fed induction motor (IM). These PWM generation techniques are Sinusoidal based PWM (SPWM), Third Harmonic based PWM (THPWM), and Space Vector based PWM (SVPWM) with PI control of IM. These methods are modeled using MATLAB-Simulink software. Simulation results are compared with results of an experimental prototype to confirm validity of results. used at mega 328/p to generate PWM for gate drive IGBT switching, it is inexpensive. The results exposed that SVPWM gives 15% increase in essential output with improved value. settling time of desired speed better than different techniques and less rise time, so lesser total harmonic distortion (THD) compared to SPWM or THPWM, but the SVPWM with PI control to increase overshoot of speed and increase of torque more than PI control with SPWM and THPWM.