PIC Controller Based SVPWM Technique for Induction Motor Variable Speed Drive

The Space Vector Pulse Width Modulation (SVPWM) technique is getting more popular than other classical PWM techniques because of its cleaner harmonic spectrum and higher level of output voltage. In this work, three phases of balanced AC has been generated with four different frequency levels using an 8-bit microcontroller to improve the performance of the system and also to minimize the cost of the inverter. Voltage/Hz (V/f) control for induction motor drive is also done by developing a suitable algorithm for generating the control pulses. Experimental results are provided to check the effectiveness of SVPWM technique.