Wind and photovoltaic based hybrid stand-alone power generation system

Abstract

In present scenario, electricity is important for day to day activities, but unfortunately electricity is not available in many areas due to difficulties of power grid systems. The best choice for those rural areas is to place local stand-alone power system to provide the required power to people for their better livelihood. Mostly Diesel Generators are using for power generations, but it is not economical and eco-friendly due to increasing price of diesel day by day and it release carbon products along with noise while power generation. The alternative is placing a renewable energy based stand-alone power system. The wind based power generation is most popular among the renewable energy power systems and Photovoltaic based power systems also gradually rising in society. The integration of two or more renewable systems will give more reliable in stand-alone power systems. In this paper, proposed hybrid wind and solar based stand-alone power generation system for rural application. Maximum power point tracker (MPPT) converters also included to achieve the maximum available power from renewable sources. For more reliable, a battery is also incorporated to system with proper voltage based controller. Moreover, Most of the distribution loads are unbalanced in three phase power system, hence, balanced voltages should be maintained for good power quality at load bus. In order to maintain the good power quality, controller is designed for inverter to maintain the single phase voltages at its reference values. Extensive controllers are design and tested in MATLAB Simulink in both the balanced and unbalanced load conditions. The performance of controllers is quite satisfactory under various possible conditions.