Active structural control for load mitigation of wind turbines via adaptive sliding-mode approach

This paper studies the load mitigation problem for wind turbines by using active tuned mass dampers. A state space model for the tower/nacelle system is established with the consideration of tower/blade interaction. The uncertainties that appear in the damping matrix and natural frequencies are also...

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Bibliographic Details
Published in:Journal of the Franklin Institute 2017-07, Vol.354 (11), p.4311-4330
Main Authors: Hu, Yinlong, Chen, Michael Z.Q., Li, Chanying
Format: Article
Language:English
Subjects:
Active control
Active damping
Adaptive control
Computer simulation
Control systems
Dampers
Damping
Drag
Sliding mode control
State space models
Turbines
Vibration isolators
Wind turbines
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Summary:This paper studies the load mitigation problem for wind turbines by using active tuned mass dampers. A state space model for the tower/nacelle system is established with the consideration of tower/blade interaction. The uncertainties that appear in the damping matrix and natural frequencies are also considered in the controller design. External loads acting on the tower including the drag force induced by winds and the absolute base shear induced by the rotating blades are involved, and shaping filters for online generating these loads are proposed which can be easily implemented in numerical simulations. An adaptive sliding-mode controller is proposed to handle the system uncertainties, external disturbances and hard constraint, and also to improve the overall performance of the wind turbine system. Numerical simulations are performed to demonstrate the effectiveness of the proposed control law.
ISSN:0016-0032
1879-2693
0016-0032
DOI:10.1016/j.jfranklin.2017.04.002