Grid-Connected 3L-NPC Inverter with PI Controller Based on Space Vector Modulation

For a three-level grid-connected neutral point clamped (3L-NPC) inverter, a closed-loop space vector modulation-based PI controller is presented in this paper. The clamp diodes and cascaded dc capacitors used in the diode-clamped multilevel inverter produce multiple-level ac voltage waveforms. Low THD and creating pure sine waves are the key benefits of MLIs. Generally speaking, the inverter can be set up with a three-level, five-level, seven-level, etc. architecture. However, a NPC inverter is only ever referred to as a 3-level inverter. The SVM is one of the well-liked period modulation techniques and is widely used for the digital management of VSIs. The SVM is principally used for generating change pulses. The project SVM results are compare with carrier-based curved PWM (SPWM). The enforced 3L-NPC simulation results are verified in MATLAB/SIMULINK software.