Computational and experimental study of optimal design on hybrid vertical axis wind turbine

Vertical axis wind turbine is a tool that is being developed to generate energy from wind. One cause is still little use of wind energy is the design of wind turbines that are less precise. Therefore, in this study we developed the system design of hybrid vertical axis wind turbine with computational and experimental methods. The design of hybrid turbine based on a straight bladed Darrieus turbine along with a double step Savonius turbine. The method used to design wind turbines is by studying literature, analyzing the critical parts of a wind turbine and the structure of the optimal design. The simulations results show that shortening the inner shaft then the structure strength will improve significantly. Wind turbine prototype of the optimal design characteristic tests in the wind tunnel experimentally by varying the speed of the wind. From the experimental results show that the greater the wind speed, the greater the wind turbine rotation and torque is raised. The hybrid vertical axis wind turbine with the shorter the inner shaft will have much better self-starting and better conversion efficiency.