Microprocessor-Based PWM Inverter Using Modified Regular Sampling Techniques

Pulsewidth modulation (PWM) techniques for inverter control of ac motors is becoming increasingly popular because of the number of practical advantages it offers over other techniques. Different PWM control strategies can be implemented more easily using microprocessor control. A modified microprocessor-based PWM technique incorporating linearization of the output voltage, with simultaneous reduction in the harmonic content is presented.