V形叶尖叶片结构对风力发电机固有频率影响的研究

摘要

对新型V形叶尖叶片进行模态分析,测量叶片的振动信号,得到叶片的振型、阻尼比和固有频率,并与未改型叶片对比,确认新型V形叶尖叶片固有频率提高较为显著,抗扭转性能佳,具有良好的结构动力学特性.%The vibration signal of the blade was measured via modal analysis of the new V-shaped blade tip structure to obtain the mode of vibration,damping ratio and natural frequency of the blade.When they are compared with that of unmodified blades,it is confirmed that the natural frequency of the new V shaped blade tip structure has improved remarkably with fine torsional resistance and sound structural dynamics.