Abstract
Multilevel inverter (MLI) topologies are popularly used in medium-voltage, high-power applications in recent years. This is because of effective advantages of multilevel inverter such as less Total Harmonic Distortion (THD) in output voltage, higher efficiency, less stress on semiconductor power switches. In this study, new structure of MLI that uses reduced number of controlled switches, power diodes, and DC voltage sources compared to conventional MLI topology has been simulated. Topology-I is capable of producing seven, nine and eleven levels of output voltage with seven switches and topology-II can produce seventeen levels with eight switches only. A comparison of this topology with the conventional topologies has been made in terms of controlled switches, power diodes, and DC voltage sources. Nearest level control technique has been used to generate the switching pulses. Simulation of the topologies has been carried out using MATLAB/Simulink.
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