Autonomous Battery Storage Energy System Control of PV-Wind Based DC Microgrid

This paper describes the simulation and modelling of a DC microgrid. The developed micro grid system comprises a wind turbine, solar PV array, battery energy storage system and its control interfaced with dc loads. Interfacing of the wind turbine and solar PV array via boost converter operating at MPPT to the dc grid. A constant dc bus voltage is maintained with the help of controlled Battery Energy Storage System (BESS)which is connected via a bidirectional buck-boost converter. The system is designed and analyzed in MATLAB-SIMULINK under different operating conditions of wind speed and solar irradiation and the results have been plotted.