A. A. K. Arani, A. Ghasemi, H. Karami, M. Akhbari, G. Gharehpetian
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Optimal Switching Algorithm for Different Topologies of 15-Level Inverter Using Genetic Algorithm
Multi-level inverters (MLIs) have better power quality factors compared with two level inverters, because of their staircase output waveform. Switching algorithm and Total Harmonic Distortion (THD) of the MLIs are important issues in the MLI operation. In this paper, THD and switching algorithm of three 15-level inverters topologies are investigated. In order to obtain their optimal switching algorithm, a THD-based objective function for output voltage waveform is expressed and optimized by using Genetic Algorithm (GA). Simulation of these topologies in MATLAB/Simulink is carried out to validate the results of GA. As shown in the paper, asymmetrical 15-level inverter has better performance than other topologies.
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