Simulation and study of three phase voltage source multilevel inverter with reduced switch count

Abstract

Multilevel Inverter is widely used for high power applications and also for those applications where high voltage is required. Their performance is better than conventional two- level inverters because harmonics are less. The major problems associated with multilevel inverters are the harmonic content present at the output of the inverter and the requirements of large number of switches, which will increase the switching losses, thereby reduce the efficiency and overall cost of the inverter is increased. The use of the phase carrier disposition multicarrier multilevel SPWM switching technique for this topology is presented and control signals are derived. This topology required less carrier signals and gate drivers. The efficiently the five level topology demonstrate by analysis and simulation.