Design of Simple Power Converter For Small Scale Wind Turbine System For Battery Charger

Wind energy generation, as electricity source, increases in proportion to the limitations of fossil energy. The use of wind energy for residential in remote areas that are not connected to the grid is very important. Compared to large-scale wind turbines, small-scale wind turbines are more suitable for residential because they can be integrated with building, easy to assembly and low cost maintenance. One of the most widely used wind turbine technologies is small-scale wind turbines with permanent magnet synchronous generators (PMSG). To be able to meet household electricity needs, electronic power is needed which plays an important role in wind turbine systems. In this paper the power electronic design for small-scale wind turbine systems is simple, easy to assembly and low cost. The system consists of a 500 watt PMSG, three phase uncontrolled rectifier, buck converter, microcontroller and battery as energy storage. The wind turbine system will charge the battery at a constant voltage. The constant voltage setting to the battery is carried out by the microcontroller through the duty cycle setting sent to the buck converter. Based on the results of the test, the wind turbine system can charge a battery with a constant voltage of 14Volt despite the fluctuations in wind speed and electrical energy produced.