Simulation of SVPWM Based 3-level H-bridge Inverter Used in Grid Connected PV System

In this paper, a photovoltaic (PV) array based three-level cascaded H-bridge multilevel inverter (CHBMLI) incorporated with shunt active filter (SAPF) is proposed. Inverter is modulated by space vector modulation technique. The entire system is used for power conditioning application to improve the power quality in the distribution network. The photovoltaic based CHBMLIs are very attractive solution for the distributed generation nowadays. Because this inverter has isolated dc source on the dc side of each H-bridge. The compensation strategy proposed is based on the PQ theory. The simulation results presented in this paper proves the compensation capabilities of the proposed system. The simulation studies are carried out under MATLAB Simulink environment.