Reduction of Switches in Multilevel Inverter: Analysis for Low and High Voltage Applications

The paper focuses on the analysis of different configurations of multilevel inverters. The analysis is based on building a MATLAB model of the considered configurations along with the detailed description of the switching states. The switching states and the waveform is produced by considering a sinusoidal voltage waveform as reference. Same type of circuitry is expected to give an ideal characteristic, whatsoever the voltage level may be considered. Only the nominal voltage is to be considered for analysis, since its influence that spread across almost all sectors. Three different configurations producing an output of nine levels are described, compared and analysed using MATLAB.