Implementation of Sustainable DC Grid Connected PV System during Day & Night

Abstract: In this paper, a single-phase grid connected PV systems is proposed which provides constant power supply during day & night. This proposed system uses a transformer less conversion system, to provide an uninterruptable power a batter energy storage system is introduced. The power conversion system is controlled by a fuzzy logic controller implemented with MPPT technique. To eliminate harmonics and improve power quality kept a double tuned parallel resonant filter. A modified carrier based modulation technique for the current source inverter is proposed to inject current to the grid with a resonant controller. Simulation results are performed by using MATLAB/SIMULINK.

Keywords: MPPT, Fuzzy logic, double tuned filter, PV array, grid.