关键词: 独立变桨控制, 方位角权系数, 单神经元权系数, 分区变桨控制, 风切效应

Abstract: The problem of individual pitch control for fans above rated wind speed was studied. Aiming at the influence of wind shear effect on the output power of fans, a zonal individual pitch control system based on the azimuth angle of fan blades was established in MATLAB, and two weighted coefficient modes were introduced into the control system according to the degree of wind shear effect on the blades. In the area where the influence of wind shear is small, the weight distribution model based on azimuth angle was adopted; in the area where the influence of wind shear is large, a single neuron adaptive PID controller was introduced based on the weight coefficient of azimuth angle, and the dynamic adjustment operation of pitch angle was put into the joint azimuth weight distributor to obtain a single nerve based on the weight coefficient of azimuth angle. By comparing the simulation results of the partition individual pitch control method with those of the unified pitch control method, it was found that the proposed method had obvious advantages in maintaining the stability of maximum output power and reducing the unbalanced load of the wind turbine, which verified the feasibility and rationality of the proposed model.