Design of novel cascaded multilevel inverter by series of sub multilevel inverters (original) (raw)

This paper proposed novel multilevel inverter with low number of switches. Multilevel inverters are applicable for high power purpose in industries which become very popular. When compared to two level inverters these multilevel inverters produces good quality of output wave from. In such a way that, at first new proposed topology which as sub multilevel inverter is designed after that cascaded connection of sub multi level inverters called as novel cascaded multilevel inverter is proposed. This proposed novel cascaded multilevel inverter uses less number of switching devices. Separate attention optimal structure has been achieved by considering in different aspects such as number of switching devices, number of dc voltage sources and standing voltages on switching devices. This proposed novel cascaded multilevel inverter analyzed in symmetric and asymmetric forms of topologies which were compared with other multilevel inverter topologies suppose normal H bridge multilevel inverter by considering number components such as number of switches & IGBTs etc. The validity of proposed multilevel inverter verified with computer simulation. asymmetric; high quality wave form.