激光雷达技术下直驱风机偏航优化控制方法

Optimization Control Method for Yaw of Direct Drive Fan Under LiDAR Technology

在直驱风机偏航控制过程中,受到尾流紊流影响会出现控制偏差,直接影响直驱风机的安全性,为此该文提出激光雷达技术下直驱风机偏航优化控制方法。利用激光雷达技术对风向和风速进行测量,获取直驱风机偏航角。根据直驱风机尾流速度分布情况,构建激光测风雷达功率谱密度函数,获取目标区域附近湍流粒子真实散射信号。根据风机输出的机械功率,划分不同风速区间。计算偏航延迟时间,差异性优化偏航角和时间,设计优化控制流程。实验结果可知,该方法的控制稳定性较优,风向与实际值一致,具有精准控制效果。

During the yaw control process of a direct drive fan,control deviation occurs due to the influence of wake turbulence,which directly affects the safety of the direct drive fan.Therefore,a method for optimizing the yaw control of a direct drive fan using LiDAR technology is proposed.Using LiDAR technology to measure wind direction and speed,and obtain the yaw angle of a direct drive fan.Based on the velocity distribution of the wake of a direct drive wind turbine,a power spectral density function of a laser anemometer is constructed to obtain the true scattering signal of turbulent particles near the target area.Divide different wind speed ranges based on the mechanical power output of the fan.Calculate the yaw delay time,optimize the yaw angle and time based on differences,and design an optimized control process.The experimental results show that the control stability of this method is relatively good,which is consistent with the actual value and has precise control effect.