The analysis of voltage source inverter and multilevel inverter based on grid connected system. The cascaded H bridge multilevel inverter has improved the performance of grid connected system such as high power factor, less total harmonic distortion. The dc –dc converter fed grid connected system. The high switching frequency has utilized to decrease the switching losses. The voltage source inverter has utilized less passive elements compared to multilevel inverter. The PV based converter system has utilize both voltage source and multilevel inverter. The comparison of voltage source inverter and multilevel inverter of power factor and harmonic distortion is designed and implemented in MATLAB/Simulink environment.