The Effect of The Angle of Attack of the Electric Power Generated on Prototype of the Horizontal Axis Wind Turbine

Institut Teknologi Kalimantan (ITK) is one of the new university where located in the middle of the forest in Balikpapan. The power source of electrical energy only comes from PLN. As the increasing of students, the demand of electric power also increase, then development of new energy is needed. Based on BMKG data in 2018, the average wind speed in Balikpapan ranges from 5 km / h - 18 km / h. Based on the wind speed data, a horizontal axis wind turbine (HAWT) will be made. This HAWT is using three blades with a several variation of the angle of attack (AoA) to determine the efficiency level of the wind turbine. The variations of attack angles are 10°, 15°, 20° and 25°. Beside that, the wind turbine testing is carried out at several wind speeds of 3.8 m/s, 4.3 m/s, 5.8m/s. The experiment results show that the largest electric power is generated in the test of the horizontal axis wind turbine with variation of 250 attack angle at 5.8 m/s that is equal to 118.7 mW (paper)