基于非奇异快速终端滑模观测器的内置式永磁同步电机永磁体去磁在线故障检测

Online fault detection of permanent magnet demagnetization for IPMSMs by nonsingular fast terminal-sliding-mode observer.

作者信息

Zhao Kai-Hui, Chen Te-Fang, Zhang Chang-Fan, He Jing, Huang Gang

机构信息

School of Traffic and Transportation Engineering, Central South University, Changsha 410073, China.

School of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China.

出版信息

Sensors (Basel). 2014 Dec 5;14(12):23119-36. doi: 10.3390/s141223119.

DOI:10.3390/s141223119

PMID:25490582

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4299055/

Abstract

To prevent irreversible demagnetization of a permanent magnet (PM) for interior permanent magnet synchronous motors (IPMSMs) by flux-weakening control, a robust PM flux-linkage nonsingular fast terminal-sliding-mode observer (NFTSMO) is proposed to detect demagnetization faults. First, the IPMSM mathematical model of demagnetization is presented. Second, the construction of the NFTSMO to estimate PM demagnetization faults in IPMSM is described, and a proof of observer stability is given. The fault decision criteria and fault-processing method are also presented. Finally, the proposed scheme was simulated using MATLAB/Simulink and implemented on the RT-LAB platform. A number of robustness tests have been carried out. The scheme shows good performance in spite of speed fluctuations, torque ripples and the uncertainties of stator resistance.

摘要

为防止内置式永磁同步电机（IPMSM）的永磁体（PM）因弱磁控制而发生不可逆退磁，提出了一种鲁棒的永磁磁链非奇异快速终端滑模观测器（NFTSMO）来检测退磁故障。首先，给出了IPMSM退磁的数学模型。其次，描述了用于估计IPMSM中永磁体退磁故障的NFTSMO的构建，并给出了观测器稳定性的证明。还提出了故障判定准则和故障处理方法。最后，使用MATLAB/Simulink对所提方案进行了仿真，并在RT-LAB平台上实现。进行了多项鲁棒性测试。该方案在存在速度波动、转矩脉动和定子电阻不确定性的情况下仍表现出良好的性能。