内容：
叶片桨距角之间的角度差异产生的空气动力失衡是海上风机的主要动力问题之一。基于海上风机分析程序FAST和水动力计算程序WADAM开发的一种时域数值模拟程序,可计算海上风机系统在风浪载荷作用下的耦合动力响应。应用此数值工具,模拟一个叶片上变桨控制系统失效的情况,研究空气动力失衡对浮式海上风机系统运动响应的影响。分析表明,空气动力载荷失衡引起的激振不仅激发了浮式基础的横向运动,而且增大了基础的纵荡运动和首摇运动。同时,空气动力失衡还大幅增加了风机塔柱底部受到的横向剪切力,对风机系统的安全性造成了威胁。 The angular difference between the blade pitch angle and the aerodynamic imbalance is one of the main driving problems of the offshore wind turbine. Based on the offshore fan analysis program FAST and the hydrodynamic calculation program WADAM, a time - domain numerical simulation program can be used to calculate the coupling dynamic response of the offshore fan system under wind - wave load. Using this numerical tool to simulate the failure of a blade pitch control system, the influence of aerodynamic imbalance on the motion response of floating offshore wind turbine system is studied. The analysis shows that the excitation caused by the imbalance of the aerodynamic load not only stimulates the lateral motion of the floating foundation, but also increases the basic pitching motion and the first rocking motion. At the same time, the aerodynamic imbalance also significantly increased the lateral shear force at the bottom of the tower, posing a threat to the safety of the fan system.

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