风力机叶片的分段直前后缘设计技术与应用

Design and application of straight leading-edge and trail-edge technology for wind turbine blades

目前风力机叶片的气动设计方法主要依据简化风车模型与Glauert旋涡理论,但这两种方法得到的叶片在叶根及叶尖弦长过大,在叶根附近扭曲严重,对整体性能及加工制造不利。文章在Glauert旋涡理论设计方法基础上,给出了一种前后缘分段直线化设计技术及其在风力机叶片的气动外形设计中的应用。利用该技术对1MW风力机叶片进行气动设计与计算,得到了风力机在浆矩角可调及风速变化情况下的气动性能预测结果,为风力机叶片多参数化建模及优化设计方法奠定了理论基础。

At present, he blades pneumatic design approach of wind power turbine was based on simplified wind turbine model and Glauert whirlpool theory. However, the blades of blade root and tip length from the tow approaches are so large that the wind turbine performance and manufacture is not satisfied. The paper introduces the leading-edge and trailedge paddy straight technology and its application in the blades pneumatic outside design. The pneumatic designing and calculating of 1MW wind turbine are realized with the technology. And the pneumatic performance forecast results are obtained on the in the condition of variable pitch angle and changeable speed. The technology established the fundamental theory for wind turbine blades modeling and Optimization design with multi-parameters.