考虑磁链变化率的永磁同步电机失磁故障复合容错控制  

Compound fault tolerance control of permanent magnet synchronous motor with magnetic flux change rate considered

作　　者：何静[1] 李希宇 贾林[2] He Jing;Li Xiyu;Jia Lin(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China;College of Railway Transportation,Hunan University of Technology,Zhuzhou 412007,China)

机构地区：[1]湖南工业大学电气与信息工程学院,株洲412007 [2]湖南工业大学轨道交通学院,株洲412007

出　　处：《电子测量与仪器学报》2024年第3期1-11,共11页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(62173137,52172403,62303178);湖南省教育厅科学研究项目(23A0426,22B0577);湖南省自然科学基金(2023JJ50193)项目资助。

摘　　要：针对永磁同步电机(PMSM)失磁故障中磁链变化较快,近似认为磁链变化率为0会导致传统PMSM失磁容错控制方法性能受限的问题,本文提出一种基于智能比例积分微分的无模型超螺旋滑模复合容错控制(iPID-MFSTSMC)方法。首先,构建考虑永磁体磁链变化量的PMSM失磁故障数学模型,根据这一模型设计了磁链滑模观测器,实现了对于磁链及其变化率的观测。此外,针对快速变化的负载转矩设计了负载转矩导数滑模观测器。然后,基于磁链及其变化率、负载转矩导数的观测,设计了iPID无模型容错控制方法,该方法采用超螺旋滑模算法对观测误差及其他扰动进行抑制,改善了动态性能且降低了控制器参数的设计难度。利用Lyapunov稳定性定理证明了所设计容错控制方法的稳定性,并给出了参数的设计条件。最后,在磁链以及负载转矩快速变化工况下,通过仿真和实验分析表明,该方法可以有效减少系统抖振并降低超调量。When the magnetic flux of a permanent magnet synchronous motor changes rapidly,it is approximately assumed that a magnetic flux change rate of 0 will constrain the performance of the PMSM fault-tolerant control system.This paper proposes a model free super twisting sliding mode composite fault-tolerant control method based on intelligent proportional integral differential(iPIDMFSTSMC).Firstly,a mathematical model for PMSM demagnetization fault was constructed,taking into account the variation of permanent magnet magnetic flux.Based on the constructed model,a magnetic flux sliding mode observer was designed to observe the magnetic flux and its rate of change.In addition,a load torque derivative sliding mode observer was designed for rapidly changing load torque.Then,an iPID model free fault-tolerant control method was designed based on observations of magnetic flux and its change rate,as well as load torque derivatives.The proposed control method uses a super twisting sliding mode algorithm to suppress observation errors and other disturbances,improve dynamic performance,and reduce the difficulty of controller parameter design.The stability of the designed fault-tolerant control method was proved using Lyapunov stability theorem,and parameter design conditions were provided.Finally,under the condition of rapid change of flux and load torque,simulation and experimental analysis show that the proposed method can effectively reduce the system jitter and reduce the overshoot.

关 键 词：永磁同步电机 无模型超螺旋滑模控制 磁链 观测器 

分 类 号：TM351[电气工程—电机]