变速变桨距风力发电系统非线性实际跟踪采样控制  

Non-linear Practical Tracking Sampled-data Control of Variable-pitch Wind Turbine System Under Variable Wind Speeds

作　　者：褚红燕 姜寒玉 丁作铭 CHU Hongyan;JIANG Hanyu;DING Zuoming(School of Physics and Technology,Nanjing Normal University,Nanjing 210046,China)

机构地区：[1]南京师范大学物理科学与技术学院,南京210046

出　　处：《电力系统及其自动化学报》2019年第12期75-80,共6页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金资助项目(61603194,51706108)。

摘　　要：为了降低风速的强随机性与风力发电机建模的不确定性给风力发电系统的功率跟踪控制带来的不利影响,设计了新型非线性采样控制器。首先根据系统工作原理建立系统的近似数学模型,然后通过设计连续状态反馈控制器估计压制增益,最后借助李雅谱诺夫函数法构造既能满足稳定性要求又能快速跟踪的采样控制器。阶跃输入与正弦输入的2个算例表明采样控制器的稳定性及快速跟踪特性。非线性跟踪采样控制器便于在计算机中实现,在发电系统中的应用将大大减少干扰及不确定性对系统的影响。To reduce the adverse effects of strong randomness of wind speed and uncertainties in wind turbine modeling on the power tracking control of a wind power generation system,a novel type of non-linear sampled-data controller is designed in this paper.First,an approximate mathematical model of the system is established according to its operating principle.Then,a continuous state feedback controller is designed to estimate the suppression gain.Finally,a sampleddata controller is constructed by means of the Lyapunov function method,which can not only meet the stability requirements but also realize fast tracking.Two examples of step input and sinusoidal input show the stability and fast-tracking characteristics of the novel controller.This controller is easy to implement on a computer,and its application in the power generation system will greatly reduce the effects of disturbances and uncertainties on the system.

关 键 词：压制法 实际跟踪 采样控制 变桨距 风力发电系统 

分 类 号：TP1[自动化与计算机技术—控制理论与控制工程]