摘要
为实现直驱永磁同步发电机(permanent magnet synchronous generator,PMSG)的最大输出功率追踪,构建了一种基于模型参考自适应自抗扰控制的永磁同步风力发电系统最大功率控制系统。首先,搭建模型参考自适应系统(model reference adaptive system,MRAS)来估算风力发电系统的角速度,实现控制系统的无位置控制,并对MRAS中的PI反馈自适应无法快速跟踪转速且具有超调等问题,提出伪微分反馈自适应率,有效提升无位置控制的精度;同时,为提高PMSG动态响应性能,增强PMSG的抗干扰性能,增强出速度环自抗扰控制(active disturbance rejection control,ADRC)策略,可以很好地进行风速跟踪,确保在不同风速下实现最大功率追踪。仿真结果表明,当风速变化较小时所提控制策略转速估计误差很小,而传统MRAS控制策略初始位置估计误差超过了10 rad/s,同时动态过程中也存在一定的跟踪误差,当风速变化剧烈时所提控制策略转速跟踪误差不是很大,而传统MRAS控制策略误差超过10 rad/s。研究结果表明,所提控制策略可以准确地追踪转速,并具有较好的动态性能。
To generation system is constructed bachieve maximum output power tracking of direct-drive permanent magnet synchronous generator(PMSG),a maximum power control system for permanent magnet synchronous wind power generation system is constructed based on model reference adaptive active disturbance rejection controller.First,a model reference adaptive system(MRAS)is constructed to estimate the angular velocity of the wind power generation system and achieve position free control of the control system.At the same time,in response to the problems of slow tracking and overshooting with PI feedback adaptation in traditional model reference adaptive systems,a pseudo differential feedback adaptation rate is proposed to improve the accuracy of position free control.Furthermore,in order to improve the dynamic response performance of PMSG and enhance the anti-interference performance of the system,a speed loop active disturbance rejection control(ADRC)strategy is designed.It can effectively track wind speed and ensure maximum power tracking performance at different wind speeds.The simulation results show that when the wind speed changes slightly,the speed estimation error of the proposed control strategy is very small,while the initial position estimation error of the traditional MRAS control strategy exceeds 10 rad/s,with a certain tracking error in the dynamic process.When the wind speed changes sharply,the speed tracking error of the proposed control strategy is not very large,while the error of the traditional MRAS control strategy exceeds 10 rad/s.The research results show that the proposed control strategy can realize accurate speed tracking and demonstrate good dynamic performance.
作者
杨亚
王征兵
徐杰
YANG Ya;WANG Zhengbing;XU Jie(Department of Intelligent Manufacture,Wuhu Institute of Technology,Wuhu 241006,China;Jiangsu Electric Power Design Institute,Nanjing 210000,China)
出处
《太原学院学报（自然科学版）》
2024年第2期61-68,共8页
Journal of TaiYuan University:Natural Science Edition
基金
安徽省教育厅高校自然科学研究重点项目(2022AH052196)
安徽省高等学校省级质量工程项目(2022jyxm1788)
安徽省职业与成人教育学会教育教学研究规划课题(AZCJ2023058)
芜湖职业技术学院校级科学研究重点项目(wzyzrzd202408,wzyzrzd202410)。
关键词
永磁同步发电机
自抗扰控制
模型参考自适应系统
无位置
permanent magnet synchronous generator
active disturbance rejection control
model reference adaptive system
position free
