APPLICATION OF GENETIC ALGORITHM TO MINIMIZE HARMONIC IN MULTILEVEL INVERTER

Abstract: In inverter design, harmonic voltage is the main issue which affects the performance of the inverter. Generally, the harmonic minimization problem complexity is influenced by the number of harmonic orders to be minimized. This paper presents the utilization of genetic algorithm (GA) to solve harmonic minimization problem in multilevel inverter. The objective is to find relationship between the number of minimized harmonic orders and the results of total harmonic distortion (THD). The inverter to investigate is 11-level, but it is also applicable to multilevel inverters with any number of levels. The results show that harmonic contained in the output voltage has a small dependence on the number of harmonic orders that are minimized. However, the best results are still satisfied even though involving higher number of harmonics. The best-obtained THD, evaluated until 19th harmonic, is 2.76%, which is fairly low and thus acceptable.
Keywords: Harmonic, genetic algorithm, multilevel inverter and optimization
Author: Firmansyah Nur Budiman, Novie Ayub Windarko, Son Kuswadi
Journal Code: jptlisetrogg160001

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