In an industrial environment more number of motor load are operated through power electronic control device. As a characteristic of power electronic controller, the non linear in the load will detoriated power quality in the system which may lead to increase in power losses. With the development of power electronic controller using multilevel switching device it is possible to improve the power quality .This paper present analysis of improvement in the power supply and power quality compensation feeding to a nonlinear load in industrial environment. Exhaustive simulation research are presented to verify the performance analysis.

Keywords: Multilevel inverter, cascaded H-bridge, THD, VSI