An Ideal Steady State Output Voltage of a Single-Phase PWM Inverter

Abstract

This paper presents investigation on the performance of a single phase PWM inverter system using Insulated Gate Bipolar Transistors (IGBTs). For obtaining optimum voltage waveforms, the firing and commutation instants must be scheduled properly. The control circuit for such a system has been studied and implemented.

Effect of the ratio of the carrier frequency to the reference frequency on the voltage harmonic content has been discussed and presented.

It is well known that for inductive loads, snubber circuits become necessary. In the present paper, a method has been devised to calculate the proper values of the snubber circuit parameters. The validity of the devised method has been checked by using it with different operating conditions.

Waveforms and harmonic spectrums for load voltage have been simulated and presented using SIMPLORER software.