Reducing THD of 7-Level Packed U-cell Multilevel Inverter Using Genetic Algorithm

in this paper, a single-phase, 7-level inverter is presented using the modified pulse width modulation (MPWM) technique and packed U-cell (PUC) topology. The simulation of the proposed inverter is done in the MATLAB Simulink software. Currently, multi-level inverter (MLI) technology is a crucial option in the high-power, medium-voltage energy control sector. Despite the multi-level inverter’s many benefits, using so many semiconductor switches results in drawbacks at the higher level. The inverter’s size and price could grow as a result, and losses could rise. Therefore, it is advised to cut back on the switches in the new multi-level inverter in order to reduce these issues. A proposed 7-level PUC multilevel inverter (PUC-MLI) is shown to decrease overall harmonic distortion and price. The semiconductor switches switching sequences enhance the multilevel inverter’s performance. This paper represents a new method to reduce the total harmonic distortion (THD) of the output voltage of an inverter utilizing a genetic algorithm (GA). It is shown that the proposed algorithm reduced THD significantly. The proposed method is applicable to different topologies of inverters as well as different levels. By utilizing the proposed method without spending any money, the THD can be reduced.