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Article

Online Fault Detection of Permanent Magnet Demagnetization for IPMSMs by Nonsingular Fast Terminal-Sliding-Mode Observer

1
School of Traffic and Transportation Engineering, Central South University, Changsha 410073, China
2
School of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China
3
School of Information Science and Engineering, Central South University, Changsha 410073, China
*
Author to whom correspondence should be addressed.
Sensors 2014, 14(12), 23119-23136; https://doi.org/10.3390/s141223119
Received: 26 June 2014 / Revised: 12 November 2014 / Accepted: 26 November 2014 / Published: 5 December 2014
(This article belongs to the Section Physical Sensors)
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-LABplatform. 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. View Full-Text
Keywords: nonsingular fast terminal-sliding-mode observer (NFTSMO); interior permanent magnet synchronous motors (IPMSMs); permanent magnet (PM); demagnetization; fault detection; flux-weakening control nonsingular fast terminal-sliding-mode observer (NFTSMO); interior permanent magnet synchronous motors (IPMSMs); permanent magnet (PM); demagnetization; fault detection; flux-weakening control
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MDPI and ACS Style

Zhao, K.-H.; Chen, T.-F.; Zhang, C.-F.; He, J.; Huang, G. Online Fault Detection of Permanent Magnet Demagnetization for IPMSMs by Nonsingular Fast Terminal-Sliding-Mode Observer. Sensors 2014, 14, 23119-23136. https://doi.org/10.3390/s141223119

AMA Style

Zhao K-H, Chen T-F, Zhang C-F, He J, Huang G. Online Fault Detection of Permanent Magnet Demagnetization for IPMSMs by Nonsingular Fast Terminal-Sliding-Mode Observer. Sensors. 2014; 14(12):23119-23136. https://doi.org/10.3390/s141223119

Chicago/Turabian Style

Zhao, Kai-Hui, Te-Fang Chen, Chang-Fan Zhang, Jing He, and Gang Huang. 2014. "Online Fault Detection of Permanent Magnet Demagnetization for IPMSMs by Nonsingular Fast Terminal-Sliding-Mode Observer" Sensors 14, no. 12: 23119-23136. https://doi.org/10.3390/s141223119

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