【摘要】 研究叶片失效条件下风电机组整机动力学响应数值模拟方法，以NREL 5 MW机组为对象，基于Simpack软件，建立风电机组整机气-弹-控联合仿真模型，分析紧急停机措施下叶片失效机组的动力学响应特征。在此基础上，通过参数化分析揭示了叶片失效所在相位角、叶片失效长度、风速、湍流度、顺桨速率、反应时间等多种因素对于叶片失效条件下机组动力学响应的非线性影响规律。提出一种发电机扭矩随风轮转速下降的优化停机方案，通过数值模拟得到的机组动力学响应曲线验证了该方案的有效性。更多还原

【Abstract】 The simulation method for dynamic responses of wind turbine under blade failure condition is investigated. The combined simulation model with air-elastic-control coupling for NREL 5 MW wind turbine is established using multi-body dynamic simulation software Simpack. The characteristics of dynamic time-history responses of wind turbine when emergency stop under blade failure condition are analyzed. On this basis, the nonlinear influence law of azimuth, failure length, wind speed, turbulence intensity, pitch rate and reaction time on the dynamic responses of wind turbine under blade failure condition are researched. An optimel shutdown scheme for generator torque reduction with rotor speed is proposed, and the effectiveness is validated through the curve of dynamic responses of wind turbine acquired by numerical simulation.更多还原