Modelling a Hybrid Renewable Energy System for Recharging Electric Vehicles

Cold countries with low irradiance values have typically used utility grid to support solar PV systems. However, the extended option is facing new challenges: the electricity tariffs increase and the expected high penetration of EVs, which can increase the pressure on the grid. In this research, a prototype simulation model of a solar PV-batteries-grid HRES to cover recharge of EVs was developed. The system was simulated in MATLAB®, with a control algorithm based on power balance between EVs load demand-solar PV generation, and the state of charge (SOC) of the batteries. The results indicate the suitability of the simulation model. It can select the appropriate support system according to the control algorithm. Moreover, the two scenarios presented for the case study reflect the importance of the initial SOC, since it will directly affect the availability of batteries for covering electricity shortfalls.