JELE_V6_N1_RP4 Nimain Charan Nayak Journal on Electronics Engineering 2249 – 0760 6 1 28 40 Multilevel Inverter, Selective Harmonics, Genetic Algorithm, Fitness Function, Total Harmonic Distortion This paper deals with the harmonic elimination in multilevel inverters. Multilevel inverters are advanced types of inverters. The desired level of levels is obtained by using the method of triggering. A seven level cascaded H-bridge inverter has been used here. To synthesize multilevel output AC voltage using different levels of DC input, semiconductor devices must be switched on and off. The output contains harmonic and total harmonic distortion. These affect the solution and hence have to be eliminated. Selective harmonic elimination is the method in which the author selects the harmonics which needs to be eliminated. Different methods are used to eliminate the harmonics. In this paper, the author makes use of genetic algorithm to eliminate the harmonics. Genetic algorithm is a computational algorithm that solves optimization problem by imitating the genetic processes and the theory of evolution. It imitates biological evolution by using parameters such as reproduction, crossover mutation etc. The fitness function of multilevel inverters is solved and firing angles are obtained. These firing angles are obtained to the semiconductor devices and output with minimum harmonics and total harmonic distortions are obtained. September – November 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3683