Stand-alone photovoltaic/wind energy hybrid generation system with MPPT for rural applications

Most of the rural parts of India are affected by frequent power cuts and abnormal voltage ratios. A hybrid generation system consist photovoltaic (PV), wind turbine (WT) and Battery is presented to supply stable power to rural residential loads. DC/DC converters are used to control the power flow to the load and Maximum Power Point Tracker (MPPT) is used for maximum power extraction from the solar photovoltaic systems and wind turbine. To compensate power fluctuation of renewable energy MPPT method is used. When PV and WT generate power is lower than demand power, the battery is controlled to discharge power to complete the difference of supply and demand power. If PV and WT generate power is higher than demand power, the battery is controlled to charge power. The system was simulated by using MATLAB/Simulink. The simulation results show the proposed system can compensate power fluctuation.