中文摘要：

基于BEM修正模型和Pitt-Peter模型,推导出非定常流下的动态入流模型。利用四阶Runge-Kutta法求解动态入流模型中的一阶微分方程。考虑大型机组柔性叶片工作过程中发生大尺度变形的特点,加入柔性结构变形对动态入流模型的反馈。分别研究风力机在风剪、风湍流、偏航、叶片桨距角和风轮转速变化过程中的诱导因子的渐变机理。运用MATLAB进行编程,对某5MW风力机进行动态诱导因子计算,建立起诱导因子的动态描述,得到适合柔性叶片翼型的动态入流模型及分析方法。通过对比几种不同模型的计算结果,验证了加柔性结构反馈的动态入流模型的正确性和实用性。

英文摘要：

The dynamic inflow model in yaw condition was constructed based on the theory of BEM re- vised model and Pitt-Peter model; besides first-order differential equation of dynamic inflow model was also figured out by using fourth-order Runge-Kutta method. When taking large deformation of flexible blade dur ing the working proceed and the feedback of flexible structural deformation on dynamic inflow model into consideration, the gradient mechanisms of induce factor on wind turbine were obtained in different circum- stances, such as in the wind shear, wind turbulence, yaw, transition of rotor speed and blade pitch angel. Dynamic induce factor of one 5MW wind turbine was figured out, dynamic description of induce factor was founded, what＇s more dynamic inflow model and analytical method suitable for flexible blade were estab- lished, all these calculate were achieved by employing MATLAB programming. The validity and practicality of dynamic inflow model with flexible structural feedback were confirmed by comparing the calculate results of different models.