Abstract：Torque vibration is an important reason of wind turbine drive train fatigue damage. The nonlinear and uncertainty characteristics in drive train are analyzed firstly in this paper. A torque vibration control method is designed based on active disturbances rejection control technique. The external disturbances and uncertainties of drive train, which include gear engaging dynamic stiffness, gear engaging error and flexible coupling nonlinear stiffness and damping etc., are integrated as compositive disturbances. The compositive disturbances are estimated with extended state observer and compensated during torque vibration control. The torque vibration controller is evaluated based on a 3MW doubly fed variable speed wind turbine. The simulation result shows that the gearbox torque vibration is mitigated obviously on the premise of not affecting generator output power.
姚兴佳, 王晓东, 单光坤, 刘姝. 双馈风电机组传动系统扭振抑制自抗扰控制[J]. 电工技术学报, 2012, 27(1): 136-141.
Yao Xingjia, Wang Xiaodong, Shan Guangkun, Liu Shu. Torque Vibration Active Disturbance Rejection Control of Double-Fed Wind Turbine Drive Train. Transactions of China Electrotechnical Society, 2012, 27(1): 136-141.
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