Title :
Individual pitch control for variable speed turbine blade load mitigation
Author :
Xingjia, Yao ; Xiaodong, Wang ; Zuoxia, Xing ; Yingming, Liu ; Jun, Liu
Author_Institution :
Wind Energy Inst., Shenyang Univ. of Technol., Shenyang
Abstract :
Dynamic load is a key consideration in large scale wind turbine design. It is approved that the performance of controller can distinguish impact wind turbine loads. During pitch control algorithm design, if load influence is considered, it will be benefit to lower cost of whole wind turbine and extend longevity. In this paper, an individual pitch controller is developed based on a kind of model free control strategy, to mitigate the blade root load for variable speed wind turbine. The measured blade root bending moment is taken as one of the inputs of the controller, and the three pitch demand as the controller output. The control strategy was simulated in bladed external controller based on a 3.0 MW doubly fed variable speed wind turbine model, the simulation result verified itpsilas feasible and effective. The blades root load is mitigated evidently compared to classic collective pitch control.
Keywords :
bending; power generation control; blade root bending moment; bladed external controller; individual pitch control; load influence; model free control; power 3.0 MW; variable speed turbine blade load mitigation; wind turbines; Aerodynamics; Algorithm design and analysis; Blades; Control systems; Large-scale systems; Poles and towers; Servomechanisms; Wind energy; Wind speed; Wind turbines;
Conference_Titel :
Sustainable Energy Technologies, 2008. ICSET 2008. IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-1887-9
Electronic_ISBN :
978-1-4244-1888-6
DOI :
10.1109/ICSET.2008.4747110