The SPWM inverters are widely used for energy conversion in renewable sources viz. solar power, Wind and bio¬¬ plants. The paper has evaluated the FFT performance of three different inverting architectures triggered using the sinusoidal pulse width modulation (SPWM). Commonly PWM is used for changing the Gain of the inverter unit. Usually inverters are used for the conversion of DC energy to AC mains for connecting to the grid line. The paper first analyze the performance of the simple IGBT based single phase half wave and full wave inverter without PWM action. In the further architectures, SPWM based Uni polar and Bi polar inverter architectures are evaluated via FFT analysis. All these inverters are implemented and there outputs are described and compared. Simulation results are compared based on the FFT performance and bode analysis using LTI viewer using Simulink. The inverting action is tested for operating the high voltage AC motors.

Full text: IJEIR_2388_FINAL.pdf