MULTILEVEL INVERTER TOPOLOGIES USING FLIPFLOPS

Abstract

Multilevel inverters are used in high power applications which are used to reduce the voltage rating of the semiconductor switching devices. This paper proposes three multilevel inverter topologies based on the flip flops and logic gates. The topologies are five level Cascaded multilevel inverter, five level diode clamped multilevel inverter and five level flying capacitor multilevel inverter. By using the switching states the Boolean equations are formed. These equations are given as the input to the switches of the multilevel inverter by using the flip flops and gates. These proposed topologies produce the five level output which are nearer to the sinusoidal waves. This proposed system is used to decreases the total harmonic distortion (THD) and also increases the performance of the system.