摘要(英) |
The main objective is to improve the structural analysis and design for small wind turbine system. The 10-kW wind turbine is investigated by using a finite element software - ANSYS. It analyzes the static structural of the wind turbine in the maximum rotational speed and the extreme wind speeds. Besides, it analyzes the dynamic natural frequency to consider whether it closes to the natural frequency of the structural system resulting in resonant amplification. When the overall wind turbine is complex and large, its mesh is hard to converge. Therefore, it predicts the static and dynamic properties of the main system by subsystem analyzing. It’’s workable after proving subsystem analyzing. Finally, there are some proposed structures for the wind turbine improvement. For the tower of the wind turbine, its workable methods to change tubular tower into cone and add steel cables. For the part of the blades, to add stiffness of connecting rods and weaken secondary blades is workable methods. Besides, adding stiffness of connecting rods can avoid the natural frequency of the structure. Furthermore, the result and improvement can provide reference for a designer of the small wind turbine.
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