Performance enhancement methodologies for grid connected photovoltaic systems

The inherent intermittent nature of renewable energy resources introduces the great challenges to integrate their generation to the utility grid. The rapid increase in grid-connected photovoltaic systems and their intermittent nature of generation introducing many issues like voltage fluctuations, harmonic distortions for sustainable power generation. This paper presents modeling, simulation and performance enhancement methodologies for grid-connected PV system with implementing suitable MPPT topology and control algorithm for battery energy storage system (BESS). BESS provide benefits to mitigate power fluctuation and regulating DC-link voltage and MPPT topology based on incremental conductance with integral regulator provides accurate and fast tracking efficiency to extract maximum possible power from PV array systems and make the PV grid connected generation systems more reliable. The effectiveness of proposed control strategies for performance enhancement of grid connected PV systems is evaluated using MATLAB/SIMULINK environment.