Yawing characteristics during slippage of the nacelle of a multi MW wind turbine

The Science of Making Torque from Wind

Kim, M.-G.^1 ; Dalhoff, P.H.^1 ; Gust, P.^2

Department of Mechanical Engineering and Production Management, Hamburg University of Applied Sciences, Hamburg

20099, Germany^1

School of Mechanical Engineering and Safety Engineering, University of Wuppertal, Wuppertal

42119, Germany^2

关键词: Blade roots;    Electrical failures;    Extreme loads;    Mechanical malfunction;    Multi-body system model;    MW wind turbine;    Rotational speed;    Rotor torque;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/6/062010/pdf
DOI  :  10.1088/1742-6596/753/6/062010

来源: IOP

【 摘 要 】

High aerodynamic yaw loads coupled with electrical failures in the wind turbine can result to a slippage of the nacelle, due to limited braking capabilities of the yaw system. A slippage on the other hand can lead to a mechanical malfunction of the yaw system. To analyse the yawing characteristics of a wind turbine during nacelle slippage situations, a detailed multibody system model of the yaw system has been developed and incorporated in a multibody system model of a wind turbine based on a 3.3 MW turbine. Extreme load cases which lead to a nacelle slippage have been simulated. The dynamics and loads on different wind turbine components are presented and discussed. First results show minimal load increases of the rotor torque and the bending moments of the blade root sections during slippage but unfavourable rotational speeds of the yaw drives.