基于改进自抗扰的风力发电系统最大功率控制  

Maximum Power Control of Wind Power Generation System Based on Improved Active Disturbance Rejection

作　　者：张克兆 陆伟 熊磊 王敏 丁园园 ZHANG Ke-zhao;LU Wei;XIONG Lei;WANG Min;DING Yuan-yuan(Zhongtian Technology Group,Nantong 226000,China;College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211100,China)

机构地区：[1]中天科技集团,江苏南通226000 [2]南京航空航天大学自动化学院,江苏南京211100

出　　处：《电工电气》2022年第12期7-13,41,共8页Electrotechnics Electric

摘　　要：针对永磁同步风力发电系统(PMWS)存在的非线性、参数摄动、不确定性、多干扰等问题,采用一种基于最佳叶尖速比的最大功率跟踪控制方法,将最大功率捕获问题转换为最佳速度跟踪问题,分别针对速度环和电流环进行自抗扰控制器的设计;考虑到大干扰环境中,系统受内、外扰动的影响,转速跟踪精度有所下降,为提高控制精度和鲁棒性,针对速度环设计了一种基于扰动观测的降阶自抗扰控制器。通过扰动观测器对系统的总干扰进行在线观测,然后利用自抗扰控制器进行干扰补偿,从而提高转速的跟踪能力。仿真结果验证了所设计的复合控制器能有效地抑制系统扰动对转速的影响,提高了系统的鲁棒性和抗干扰性能。This study proposed an improved ADRC by considering the problem of nonlinearity,parameter perturbation,uncertainty,and multi-disturbance in permanent magnet synchronous wind power generation systems(PMWS).It employed the maximum power tracking control method based on the optimum tip speed ratio to transform the maximum power acquisition problem into the optimal speed tracking problem and designed the ADRC for the speed loop and current loop.The speed tracking accuracy of the wind-driven generator might decrease because the system suffered internal and external disturbance in the maximum interference environment.A reduced-order ADRC based on disturbance observation was designed for the speed loop to improve the control accuracy and robustness.The disturbance observer observed the total disturbances of the system online and used the active disturbance rejection controller to implement disturbance compensation and improve the speed tracking ability.The simulation results verified the designed composite controller could help control the influence of the system disturbance on rotational speed.

关 键 词：扰动观测 自抗扰控制器 风力发电系统 功率跟踪 非线性 

分 类 号：TM614[电气工程—电力系统及自动化]