Abstract—The power electronic converter which converts DC power to AC power at required voltage and frequency is known as Inverter. Inverters with different levels of output voltage and current are called Multilevel Inverter. Multilevel inverter have very high efficiency and their output waveform almost reaches sinusoidal in shape as the number of levels are increased. Their main disadvantage is their complexity, requiring a great number of power devices and passive components, and complex control circuitry. This work highlights a multilevel inverter using an H-bridge output stage with two bidirectional auxiliary switches. It also achieves a significant reduction in number of power devices used. A 7-Level Multilevel inverter is discussed in this paper. The proposed inverter circuit is simulated using Matlab/Simulink tool and the results are obtained.

Index Terms—Multilevel inverter, Converter, Reduced switches, MOSFET’s, H-Bridge, MATLAB/ Simulink

Cite: Jithin Baby and Bharathi A Rao, "SIMPLIFIED 7 LEVEL MULTILEVEL INVERTER," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 1, No. 1, pp. 201-208, March 2015.