永磁同步电机驱动系统质量不平衡故障的复合容错控制  

Compound fault tolerant control for mass unbalance fault of PMSM driving system

作　　者：孙松 李生权 谢铖铖 李娟 王书旺 SUN Song;LI Shengquan;XIE Chengcheng;LI Juan;WANG Shuwang(School of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]扬州大学电气与能源动力工程学院,江苏扬州225127

出　　处：《扬州大学学报（自然科学版）》2021年第2期43-49,共7页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(61903322);可再生能源电力系统国家重点实验室资助项目(LAPS19003);江苏省六大人才高峰基金资助项目(KTHY2018038);江苏省研究生研究与实践创新资助项目(SJCX200890);扬州市优秀青年自然科学基金资助项目(YZ2017099)。

摘　　要：针对永磁同步电机系统质量不平衡故障引起的转速波动,提出一种基于负载转矩观测器的质量不平衡故障复合自抗扰容错控制方法.首先,对质量不平衡故障进行动力学分析,推导出负载转矩的数学模型,通过电机与负载之间的力矩耦合关系,建立故障状态下的机电耦合模型并设计负载观测器;其次,根据负载转矩观测器估计的故障模型信息优化扩张状态观测器的设计,并利用前馈补偿减小故障对整个系统性能的影响.仿真结果表明,所提的复合容错控制策略可以实现电机驱动系统在故障状态下的稳定性能,能有效降低转速和负载转矩的波动,减弱电机驱动系统中负载不平衡故障所致影响,具有较高的容错性能.Aiming at the speed fluctuation caused by the mass unbalance fault of the permanent magnet synchronous motor system,a compound active disturbance rejection fault tolerant control method based on load torque observer is presented in this paper.Firstly,the mathematical model of load torque is deduced based on the kinematics analysis of the fault.A model of electromechanical coupling fault conditions load observer is established with the torque coupling relationship between the motor and load.Secondly,the estimation of the fault model information from a load observer is used to improve the design of extended state observer so the influence of the fault on the performance of the whole control system can be attenuated via the feedforward compensation channel.The simulation results show that the proposed compound fault tolerant control method can not only achieve the stability of the motor drive system under the fault state,but also effectively reduce the fluctuation of speed,load torque and the impact of unbalanced load fault on the motor driving system.It has high fault tolerance performance.

关 键 词：负载转矩观测器 自抗扰控制 力矩耦合 故障模型 容错控制 

分 类 号：TM341[电气工程—电机]