风力发电软翼风力机捕风能力结构设计研究

Simulation of Static Torque Performance of Resistance Type Vertical Axial Wind Turbine with Soft Blades

针对传统阻力型垂直轴风力机的叶片捕风能力结构使其在微风条件下启动时,出现静态力矩波动大、部分角度范围内风机不转动等缺点,提出了一种新型的阻力型垂直轴风力发电软翼风力机。运用有限元分析方法研究其叶片捕风能力结构设计对静态启动力矩特性的影响。在ANSYS Workbench中建立风力机叶片数值仿真模型,把软翼风力机与相同风轮直径的Savonius风机在相同风速下的静态启动力矩特性进行对比分析。结果表明该风力机在力矩变化周期内的的静态力矩特性良好,证明了上述叶片结构的可行性,为阻力型垂直轴风力机在微风风能开发方面提供新的思路和理论基础。

This paper presented a resistance type vertical axial wind turbine（VAWT） with soft blades to improve the static start - up torque performance. This structure of blades was designed to overcome the fluctuation of the static torque and the start - up problem in some angle. Adopting finite element analysis method, the influence of the blade structure design of blade on the static torque performance of the wind turbine was calculated. A simulation model of blades based on ANSYS Workbench was constructed and the numerical simulation research on static torque perform- ance of the wind turbine was compared with Savonius rotor. The results show that this wind turbine with new structure of blades has good static start - up torque performance in torque variation period. Therefore, this structure of blades is feasible. The VAWT with new blades structure provides a new idea and theoretical basis to wind power develop- ment with low speed.