Application Of ADRC On Variable Pitch Control System Of Wind Turbines

The ADRC control technology is a new control technology with a large number of nonlinear functions based on the traditional PID controller. It does not depend on the accurate mathematical model of the controlled objects, and can estimate and compensate the unknown disturbances. So that the ADRC can has little dependence on the controlled object, and has fast response, small overshoot, strong anti interference ability and other characteristics. This characteristics make it become a new research direction of the modern control field. At present, the research on ADRC is mature enough, the researchers mainly carry on the analysis from three aspects. On one hand, some people research about the own characteristics of the ADRC control technology, analysis its applicability and superiority. On the other hand, the experts research on the parameters tuning. The other people engage in the practical application to make the ADRC technology from academia to industry transition.In this paper, the simplified linear of ADRC, performance analysis and application study was analysis based on the theory of ADRC. First, the significance of research and development survey of ADRC technology was carried on a brief summary. Second, the basic theory of the ADRC technology and the method of linear simplified was introduced. Then the focus is the influence of parameters change of the LADRC and via a comparative experiment prove that the LADRC inherit the advantages of ADRC, has good applicability and stability. Finally, the LADRC was applied to the wind power variable pitch system.In modern society new energy become the focus of the increasing concern of people, the wind power with great prospect in the application, obtain big development in our country. The control system was structured by the LADRC aim at to solve this kind of complex nonlinear system like wind power generation system. The simulation experiment was made by the MATLAB/Simulink software, compared with the traditional PI controller to research the control effect under different wind speed. It proves that the LADRC has certain feasibility, meet the requirement of control, and has high application value.