Development of Matlab/Simulink Model for Three Phase PWM Inverter and Hardware Implementation and Testing Using DSP with Nonlinear Load

This paper presents the development of a 30KVA three phase sinusoidal PWM inverter using DSP. Generation of DSP based PWM signal to control the voltage source inverter substantially help the development of modern inverter which is required to work on different KVA ratings or different loads for various applications. Since experimentation of different KVA ratings inverter models on hardware being relatively expensive, the use of MATLAB/Simulink helps to check the performance of these models and validate through the comparison analysis with the conventional techniques. It is possible because the algorithm required to generate the PWM signals is written in C language so it can be reused easily and this flexibility provides in terms of changing the switching frequency for the desired inverter output voltage. In this paper the algorithm development methodology and the experimental results along with simulation model are presented which show the effectiveness of the proposed algorithm.