风力机叶片叶尖小翼气动优化设计及实验

Aerodynamic Optimization Design and Experiment of Wind Turbine Blade Tip Winglets

为提升存量风力发电机组的发电量,以1.5 MW风力发电机为研究对象,基于CFD仿真、代理模型和优化算法,提出了风力机叶尖小翼的优化设计方法。该设计方法使叶尖小翼设计与机组载荷相结合,为风力机叶尖小翼的设计与应用提供重要参考,并综合考虑叶片的结构安全性、发电量提升效果和工艺转化难度,选择一种优化方案进行实验验证。结果表明:叶片增加叶尖小翼后,在年平均风速为7.56 m/s时,年发电量提升1.64%。

In order to improve the power generation of existing wind turbines,an optimization design method for the blade tip winglets of wind turbines was proposed based on CFD simulation and optimization algorithms,with a 1.5 MW wind turbine as the research object.This design method combined the design of blade tip winglets with the unit load,providing important reference for the design and application of wind turbine blade tip winglets.Considering the structural safety of the blades,the effectiveness of power generation improvement,and the difficulty of process transformation,an optimization plan was selected for experimental verification.The results show that with the addition of blade tip winglets,the annual power generation increases by 1.64%at an average annual wind speed of 7.56 m/s.