考虑剪切风的迭代学习桨距角控制策略研究  

Study on iterative learning pitch angle control strategy considering shear wind

作　　者：卢奭瑄 史航 LU Shixuan;SHI Hang(Electrical Engineering Department,Shenyang Institute of Engineering,Shenyang 110136,China)

机构地区：[1]沈阳工程学院电气工程系,辽宁沈阳110136

出　　处：《电气应用》2023年第8期53-62,I0004,共11页Electrotechnical Application

摘　　要：为实现风力发电系统的功率输出及电动机转速稳定控制,基于迭代学习控制策略(ILC)设计了一种控制律,并将其应用于叶片桨距角控制。该控制器可以抑制风剪切作用下的周期性扰动,减少桨距角执行机构的动作频率,降低机械载荷,同时使电动机转速快速跟踪期望值,实现功率稳定输出。在MATLAB/Simulink中建立了风电机组桨距角调节系统仿真模型,并与简单的迭代学习算法控制器以及传统PID控制器对比,仿真结果表明,针对具有重复特性的剪切风所带来的周期性扰动,设计的桨距角控制器对扰动的抑制作用相比于普通迭代学习和传统PID控制器更好,从而实现控制目的。In order to achieve the power output and motor speed stability control of wind power generation system,a control law based on iterative learning control(ILC)strategy is designed and applied to the blade pitch angle control.The controller can suppress the periodic disturbance under the action of wind shear,reduce the action frequency of the pitch angle actuator,reduce the mechanical load,and make the motor speed quickly track the expected value to achieve stable power output.In MATLAB/Simulink,the simulation model of pitch angle regulation system of wind turbine unit is established,and compared with simple iterative learning algorithm controller and traditional PID controller,the simulation results show that the pitch angle controller designed in this paper is better than the ordinary iterative learning and traditional PID controller to suppress the periodic disturbance caused by the shear wind with repetitive characteristics,so as to achieve the control purpose.

关 键 词：风力发电系统 变桨控制 功率水平控制 转速控制 迭代学习 周期性扰动 

分 类 号：TM614[电气工程—电力系统及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]