Darrieus-savonius hybrid wind turbine comparation with computational fluid dynamics method

The current use of energy has begun to lead to the use of renewable energy from nature, one of which is wind energy. A gust of wind can be extracted into new energy using the help of wind power plants. VAWT (Vertical Axis Wind Turbine) is a type of wind turbine whose main axis is arranged transversely to the direction of the wind and its main components are located at the base of the turbine. This study aims to determine the magnitude of the effect of variations in wind velocity and the number of blade levels of Hybrid turbines on turbine performance and aims to determine which variation is the most effective in extracting wind energy. This study uses a quasi-experimental method on the object of research in the form of vertical axis wind turbines of the Darrieus, Savonius and Hybrid types with variations in wind velocity of 3, 5 and 7 m/s and variations in the number of levels of one and two levels of Hybrid blades. The research data was obtained through simulation with the help of ANSYS 17.0 software using the CFD method (Computational fluid dynamics). The output of this research is the value of power, torque, tangential speed and efficiency generated by the wind turbine. The results showed that the wind velocity and the number of blade levels greatly affect the performance of the wind turbine. In this study, it was found that from the results of simulation testing using the CFD method, the best efficiency value was found in the one-stage Hybrid Darrieus-Savonius turbine at a wind velocity variation of 7 m/s of 3,31256% and Hybrid Darrieus-Savonius. Savonius two levels at 5 m/s wind velocity variation of 4,53786%.