REDUCTION OF TOTAL HARMONIC DISTORTION OF CASCADE H-BRIDGE INVERTER WITH TUNING SWITCHING PARAMETERS IN OPTIMIZED VALUE

Abstract

Multilevel inverters have become more convenient over the last years in electrical high power applications because, their outputs are closer to sinusoidal. The cascade H-bridge inverter (CHB) is very popular then other multilevel inverter because its control method is very easy when compared with others. In this paper new approach of seven levels Space vector modulation (SVM) is utilized to produce required fundamental voltage in CHB.  For minimized total harmonic distortion (THD), switching parameters tuned by meta-heuristic algorithms and this value has been compared with arbitrary values. The simulation results have been carried out using MATLAB/SIMULINK Software.

Keywords

• Cascade H-Bridge inverter (CHB),Space vector Modulation (SVM),Particle Swarm Optimization (PSO),Total Harmonic distortion (THD).

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