Functional Simulation Model for Single Phase Pulse Width Modulation-voltage Source Inverter (PWM-VSI) using Switching Function Concept

This paper proposes a functional simulation model for single phase pulse width modulation-voltage source inverter (PWM-VSI) using switching function concept based on actual implementation of the model using Matlab Simulink software. Through this developed Junctional model, the simplification of a single phase bridge voltage source inverter circuit can be achieved, so that the convergence and long run-time in computer calculating process problems can be solved. The general switching function concept is reviewed briefly, and the designedfunctional model ofsingle phase PWM-VSI and its implementation using Matlab Simulink are explained in detail. By the simulation of this functional model, the inverter s output voltage and current are obtained and the output current total harmonics distortion (THDi) is calculated using Fast Fourier Transform (FFT) technique. Finally, several informative simulation results verify the validity of the simplified functional model design.