Development of Novel Flying Capacitor Multilevel Inverter with reduced components & Harmonic mitigation by Soft Computing Technique

The Multilevel Inverters (MLIs) are generally used in industrial application in case of medium and high power drives where the power quality enhancement is the major concern. The purpose of this research paper is to enhance the quality of power by using Novel Flying capacitor based Multilevel Inverter(NFCMLI). Apart from this MLI will generates 13-Level stair-case Load voltage which reduces the overall harmonics in the system with lesser number of components count being used which leads to the suppression of Voltage stress in the switches. A fundamental waveform is approached by a staircase waveform as the level count rises. The output wave's harmonic distortion also decreases and eventually disappears as the step size increases. Lower or total harmonic distortion(THD) is achieved with a Pulse Width modulation strategy. Here, the firing angle is generated using a method from the realm of soft computing known as particle swarm optimization (PSO). The non-linear equations are typically solved using PSO-based Selective Harmonic Elimination (SHE) method which generates 9 switching states. When compared to the other algorithms, PSO is superior at lowering the THD in this case. An FFT comparison of the proposed topology with other 13-level existing topologies is presented at the end of this paper to demonstrate the reduction in THD. MATLAB(SIMULINK-R2020a) is used to conduct the simulation analyses.