Wu D.-H.,Key Laboratory of Advanced Process Control for Light Industry of Ministry of Education |
Shen Y.-X.,Key Laboratory of Advanced Process Control for Light Industry of Ministry of Education |
Ji Z.-C.,Key Laboratory of Advanced Process Control for Light Industry of Ministry of Education
Nanjing Li Gong Daxue Xuebao/Journal of Nanjing University of Science and Technology | Year: 2012
In view of the problems of nonlinearity of wind energy conversion system (WECS) and uncertainty of parameters, a T-S fuzzy state feedback controller is established based on a fuzzy performance evaluator. The high-speed shaft rotational speed and electromagnetic torque are used as premise variables. A nondestructive testing method is applied. The fuzzy state feedback controller of globe models is established using membership functions. The fuzzy dynamic model of wind energy conversion systems is realized, and the modeling errors and disturbances are decreased. Simulation results demonstrate that with the proposed controller, the wind energy capture ratio and the tip speed ratio can be maintained around the optimal values, and the maximization of wind energy capture ratio under the rated wind velocity is realized.