Modelling and Simulation of PV-Battery Grid-Connected Power System

As the technology advances, there is a tremendous growth in power demand, depletion of fossil fuel resources, a rise in global warming and power crisis in many countries. Owing to this, a photovoltaic-battery hybrid system that is proposed in this research work as a measure to assist the independent power providers to supply a continuous and reliable electricity to a number of households at a low cost of energy. The hybrid system comprises of photovoltaic (PV) system, energy storage facility and utility grid. The PV system is utilized to convert the natural endowed solar resources into electricity with the application of solar panels. The excess electricity generated from the solar panels can be stored with the utilization of a battery system. The battery system is charged by either the solar power via the maximum power point tracking technique (MPPT) module or by the utility grid during off-peak periods. This research work presents the system modelling and MATLAB/Simulink simulations of a grid-connected photovoltaic and battery based hybrid system. The proposed hybrid system can result in significant cost reduction as the electricity bill of the consumer is reduced and promotes an energy balance in the power system.