Fault-Tolerant Control of Wind Turbines using a Takagi-Sugeno Sliding Mode Observer

The Science of Making Torque from Wind 2014

Georg, Sören^1 ; Schulte, Horst^1

HTW Berlin, Department of Engineering i, Control Engineering, Wilhelminenhofstr. 75A, 12459 Berlin, Germany^1

关键词: 4 degrees of freedom;    Actuator and sensor faults;    Fault compensation;    Fault tolerant control;    Global stability;    Observer-based fault-tolerant controls;    Reduced order models;    Sliding mode observers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/524/1/012053/pdf
DOI  :  10.1088/1742-6596/524/1/012053

来源: IOP

【 摘 要 】

In this paper, observer-based fault-tolerant control schemes for actuator and sensor faults are implemented within dynamic wind turbine simulations. The faults are directly reconstructed by means of a Takagi-Sugeno sliding mode observer. As simulation models, both a reduced-order model with 4 degrees of freedom and the aero-elastic code FAST by NREL are used. A fault-tolerant control scheme is set up by subtracting the reconstructed fault from the faulty control signal respectively sensor value. With these fault compensation schemes, the corrected controller behaviour is close to the fault-free case. The global stability of the controller in the full-load region in the presence of faults and with active fault compensation is shown by analysing the derivative of an appropriate Lyapunov function.