摘要
针对永磁同步电机(PMSM)在复杂牵引工况下转子永磁体容易发生失磁故障的问题,提出一种基于磁链在线观测的有限集模型预测容错控制方法。首先,建立PMSM失磁故障的数学模型,分析了传统PI控制方法对永磁体失磁故障的容错功能有限。其次,设计永磁体磁链滑模观测器实时观测转子磁链;最后,提出了有限集模型预测的容错控制算法,并把观测的磁链信息反馈到有限集预测容错控制器,使预测模型中的电机参数数值与电机实际参数数值保持一致,以减小永磁体失磁故障对电机控制性能的影响,从而实现失磁故障的容错控制。仿真及实验结果表明,与传统PI控制相比,有限集模型预测容错控制方法的容错能力和鲁棒性更强。
In view of the problem that the permanent magnet rotor in the permanent magnet synchronous motor(PMSM)is easy to demagnetize when used in complex operating conditions,a fault-tolerant control method is proposed based on finite control set model predictive control(FCS-MPC)and the on-line observation of flux linkage.Firstly,the mathematical model of PMSM is established,and the limited demagnetization fault-tolerance of the traditional PI control method is analyzed.Then,the sliding mode observer is designed to observe the real-time permanent magnet flux linkage.Finally,a fault-tolerant control algorithm is constructed based on FCS-MPC.The observed flux information is fed back to the finite control set predictive fault-tolerant controller.And it can eliminate the motor parameter error between the predictive model and the actual model,reducing the impact of the permanent magnet demagnetization fault,so as to achieve the purpose of fault-tolerant control.Simulation and experimental results demonstrate that the proposed control method is more robust than the traditional PI control method.
作者
赵凯辉
陈跃
张昌凡
何静
黄刚
李涛
Zhao Kaihui;Chen Yue;Zhang Changfan;He Jing;Huang Gang;Li Tao(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China;College of Traffic Engineering,Hunan University of Technology,Zhuzhou 412007,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2019年第7期79-87,共9页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金(61773159)
湖南省自然科学基金(2018JJ2093,2018JJ4066,2019JJ40072)资助项目
关键词
永磁同步电机
失磁故障
有限集预测控制
容错控制
滑模观测器
permanent magnet synchronous motor
demagnetization
finite control set model predictive control(FCS-MPC)
fault-tolerant control
sliding mode observer
