Coordinate control strategy based on expert decision system of wind turbine

In this thesis, the torque control, pitch control and general wind turbine coordinate control strategy of variable-speed adjustable-pitch wind turbine were researched. The control object is local SUT-1500 wind turbine based on independent design. First, the control object was modeled by the modal linearization process using Bladed software, among which the mechanical dynamic response was considered. Then the operation range of wind turbine was divided into several regions and the main control strategy of each region was researched. After the description of optimal tip speed ratio control in region 2, the PID control and Simplex Method PID parameters optimal were used in region 2psila torque control and region 3psila pitch control. In the end, the coordinate control strategy based on Expert Decision System of the general whole wind turbine was described and comparatively analyzed based on experiment results.