摘要
针对高速磁悬浮列车长定子直线同步电机(LS-LSM)运行中因悬浮气隙波动与环境因素造成的参数不匹配问题,提出一种基于非光滑控制器的电流控制策略来抑制电流环中的扰动。首先建立了考虑扰动的LS-LSM的动态数学模型,揭示了参数不匹配对电流控制效果的影响机理。提出了具有有限时间收敛特性的非光滑电流控制器,构建候选Lyapunov函数估计了闭环系统的收敛时间上界。最后,硬件在环实验结果表明所提方法在参数匹配及1.5倍摄动条件下,电流环扰动抑制率提升51.6%~83%,系统响应速度加快0.03~1.17 s,显著优于传统PI控制策略。
Aiming at the problem of parameter mismatch caused by suspension air gap fluctuation and environmental factors in the operation of long stator linear synchronous motor(LS-LSM)of high-speed maglev train,a current control strategy based on non-smooth controller is proposed to suppress the disturbance in the current loop.Firstly,the dynamic mathematical model of LS-LSM considering disturbance is established,and the influence mechanism of parameter mismatch on current control effect is revealed.A non-smooth current controller with finite-time convergence is proposed,and a candidate Lyapunov function is constructed to estimate the upper bound of the convergence time of the closed-loop system.Finally,the hardware-in-the-loop experimental results show that under the condition of parameter matching and 1.5 times perturbation,the current loop disturbance suppression rate is increased by 51.6%to 83%,and the system response speed is accelerated by 0.03 to 1.17 s,which is significantly better than the traditional PI control strategy.
作者
桑鸿运
朱进权
SANG Hong-yun;ZHU Jin-quan(State Key Laboratory of High Density Electromagnetic Power and Systems,Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China)
出处
《磁性材料及器件》
2025年第3期17-23,共7页
Journal of Magnetic Materials and Devices
基金
国家自然科学基金资助项目(52302458)
轨道交通基础设施性能监测与保障国家重点实验室开放课题(HJGZ2023113)。
关键词
长定子直线同步电机
非光滑控制器
参数不匹配
long stator linear synchronous motor
non-smooth controller
parameter mismatch
