Utilization of a Novel Meta Heuristic Algorithm to Minimize Total Harmonic Distortion

Recently, application of multi-level inverter become more convenient in power electronic. The output of this inverter is close to sinusoidal waveform, it has the capability of creating high value of voltage or current and less blocking voltage on switches. These advantages make the multi-level inverter a popular solution in many power electronic applications. There are several types of multi-level converter including; neutral point diode clamped, fly capacitor, and Cascade H-Bridge (CHB). The CHB inverter are more popular compared to other multi-level inverters; controlling this type of inverter is very simple. A new approach to seven-levels Space Vector Modulation is presented to produce required fundamental voltage in CHB. In addition, the algorithm values were compared with arbitrary values, Cat Swarm Optimization (CSO) is introduced as a new meta heuristic algorithm to minimize Total Harmonic Distortion and to tune switching parameters. The simulation results were carried out using MATLAB/SIMULINK software.