Modeling and simulation of a hybrid PV/wind/battery storage off-grid power system
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Many parts of remote areas in the world are not connected to the electrical grid even with current advanced technology. Hybrid renewable energy systems (HRES) are very suitable to supply electricity to remote and isolated areas. This paper focuses on the modeling, analysis, and simulation of a hybrid (Photovoltaic/Wind/Battery Storage) power system. The PV and wind energy systems are used as primary energy systems and the battery is used as a backup energy system. The battery storage system is used to store extra power from the hybrid PV/wind system, and to supply continuous power to load when the hybrid system power is less than load power. A bidirectional DC DC converter controlled by a fuzzy logic controller (FLC) is used to manage and regulate the energy system. A control technique which is maximum power point tracking (MPPT) has been applied to capture the maximum power point from the PV system and the wind energy system. DC-DC converters are used with MPPT controller to reduce losses in the hybrid system. The solar photovoltaic (PV) and wind turbine generator systems are studied under changing environmental conditions. MATLAB/Simulink software is used to model, simulate, and analyze the entire hybrid system.