Ability of the U-Type Savonius Vertical Wind Turbine to Produce Output Power that is Influenced by Variations in Wind Speed

The utilization of wind energy as a renewable energy source continues to be developed, one of which is through a savonius wind turbine that has a vertical axis. The purpose of this final project research is to design and manufacture a prototype of a half-cylinder savonius wind turbine that has a changing wind speed to generate electricity from wind power. One of the simplest types of vertical axis wind turbines is the savonius turbine, which can use wind from various directions. In this study, the Savonius turbine is designed with half-cylindrical blades with a rotor diameter of 0.425 m and a height of 0.50 m to increase efficiency in converting wind energy into rotary mechanical energy. The prototype turbine was then tested with variations with or without a wind tunnel and wind speed variations of 3.5 m/s, 4 m/s, 4.5 m/s, 5 m/s, 5.5 m/s and 6 m/s using a fan blower to simulate different wind conditions. All data collected included shaft speed (RPM), output power, voltage, and current generated. The results show that there is a significant effect on the turbine rotational speed (RPM), tip speed ratio, and voltage and current generated by the generator by the variation of wind speed. This research makes an important contribution to the development of efficient and environmentally friendly wind power generation technology.