摘要
以IEA-15 MW风力机为对象,基于非定常叶素动量理论模型和几何精确梁理论模型研究风剪切工况下叶片气弹耦合效应对大型风力机载荷特性的影响。结果表明:在风剪切工况下,风力机载荷呈类简谐波动,且叶片的柔性形变会导致风力机载荷降低。由于动态入流效应、翼型非定常气动特性以及叶片形变共同作用导致的风力机载荷响应延迟,会加剧风轮的偏航力矩。随着风剪切系数的增大,风力机的功率、推力以及风轮俯仰力矩和偏航力矩的均值和波动幅值增大,叶片载荷响应的迟滞也更加明显。
Based on dynamic blade element momentum and geometrically exact beam theory,the effect of aerodynamic coupling effect on the load characteristics of IEA-15 MW wind turbines under wind shear conditions are studied in this paper.The results show that the wind turbine loads are similar to simple harmonics under the wind shear condition,and the flexible deformation of the blades will lead to the reduction of the wind turbine loads.Due to the dynamic inflow effect,unsteady aerodynamic characteristics of airfoil and blade deformation,the delay of wind turbine load response will increase the yaw torque of wind turbine.With the increase of wind shear coefficient,the mean value and fluctuation amplitude of wind turbine power,thrust,wind turbine pitch moment and yaw moment increase,and the hysteresis of blade load response becomes more obvious.
作者
李逸佳
周乐
马璐
雷肖
沈昕
杜朝辉
Li Yijia;Zhou Le;Ma Lu;Lei Xiao;Shen Xin;Du Zhaohui(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;China Three Gorges Corporation,Wuhan 430010,China;Shanghai Non-Carbon Energy Conversion and Utilization Institute,Shanghai 200240,China)
出处
《太阳能学报》
北大核心
2025年第12期751-761,共11页
Acta Energiae Solaris Sinica
基金
航空发动机及燃气轮机基础科学中心项目(P2022-B-V-004-001)
15 MW级海上风电机组关键技术研究与应用——海上风电叶片结构建模与运动响应计算项目(202303070)。
关键词
风力机
气动特性
气动弹性
柔性形变
风剪切
几何精确梁模型
wind turbines
aerodynamics
aeroelasticity
flexible deformantion
wind shear
geometrically exact beam theory
