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中文摘要：
采用涡尾迹方法计算准定常气动性能,结合Leishman-Beddoes动态失速模型计算叶片的非定常气动力。应用有限元分析软件,分析风力机在不同转速下的风轮模态,塔架的前后、左右振动模态。基于非定常气动力和结构振动模态,针对风力机风轮,建立其结构运动方程。求解出的叶片振动速度加入到非定常气动力的计算中,从而建立了考虑叶片振动的风力机载荷、响应计算模型。分析了Phase VI叶片和某1.5MW风力机各个叶片截面的气动力、振动位移和振动速度随时间的响应曲线,表明该方法能够较好地计算出风力机的气动性能、载荷和响应。
英文摘要：
The vortex wake method is used to predict the quasi-steady aerodynamic forces,which are subsequently input to the Leishman-Beddoes dynamic model to calculate the unsteady aerodynamic forces.The structural dynamic equations are obtained for wind turbine rotor.The modal analysis of wind turbine rotor is calculated based on blades flapwise stiffness,edgewise stiffness,and mass properties of hub and tower structure using FEM approach.The wind turbine aerodynamic forces and response calculation model is constructed by adding the contribution of blade vibration speeds to unsteady aerodynamic forces.The time-responses of aerodynamic forces,vibration deflection and vibration speed are calculated both for the NREL Phase VI turbine and for a 1.5 MW wind turbine,showing certain useful results and conclusion with analysis in detail to some extent.
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