Modeling and simulation of hybrid power system integrating wind, solar, biodiesel energies and storage battery

This paper presents the modeling, simulation and control strategy of a hybrid power system (HPS) integrating a wind energy conversion system (WECS), a solar photovoltaic system (SPV) and a biodiesel generator (BDG) as well as a storage battery designed to ensure power reliability under all various weather conditions. The model includes wind turbine, photovoltaic panels, permanent magnet synchronous generator (PMSG), power converters and maximum power point tracking (MPPT) controllers. Perturb and observe (P&O) algorithm is used to extract the maximum power from PV and Tip speed ratio (TSR) controller for the WECS. The dynamic behavior of the proposed HPS is examined under different conditions based on wind speed variation and solar radiations. The BDG is involved only for backup when the battery state of charge (SOC) is less than 45%. A Hysteresis technique is used to control the BDG startup on based on the variation of the battery SOC. The developed HPS consists of a 50 W photovoltaic panel, 300 W wind turbine, 400 W biodiesel generator and 200 Ah/24 V battery. The resultant model offers a good strategy to ensure power reliability under all conditions using renewable energies.