Abstract: This paper introduces a new Five-Level Voltage Source Inverter (VSI) for medium voltage high-power applications.This VSI can operate over an extensive variety of voltages and it has higher quality output voltage waveform and less quantity of components. Two methods are used to generate an output level, to control and adjust the flying capacitors to their coveted values. In the first method a simpleSPWM scheme is used by the comparing sinewave with output levels and second method involves comparison between sine wave with triangular signals. Second method gives better performance. The proposed five level converter is simulated in MATLAB/Simulink environment.

Keywords: Multilevel converter, Sinusoidal Pulse Width Modulation (SPWM), DC–AC power conversion.