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Eccentricity fault detection in synchronous reluctance machines

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Abstract

This paper introduces a novel index for static eccentricity (SE) fault diagnosis in synchronous reluctance motors (SynRMs). Although SynRMs with rotor barriers under SE have been modeled in a few papers, any indices for the fault detection have not yet been reported. The proposed index is a specific frequency pattern in the motor current, which can also determine the fault severity. A novel analytical magnetic field investigation is applied to ascertain the proposed index. An accurate nonlinear numerical method is proposed for the motor inductances calculation. The model considers the rotor flux barriers, magnetic saturation, and the stator slots effect. The air gap flux density and the motor current are then achieved. The fast Fourier transform is exploited as a signal-processing tool to calculate motor current spectra. Then, a two-dimension time-step** finite element method is used to attest of the proposed numerical model. Effectiveness of the proposed index is verified by simulation and experimental tests.

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Authors and Affiliations

  1. Electrical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

    Hossein Hooshmandi Safa & Hossein Abootorabi Zarchi

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  1. Hossein Hooshmandi Safa
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  2. Hossein Abootorabi Zarchi
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Hossein Hooshmandi Safa wrote the main manuscript text and prepared the figures. All authors reviewed the manuscript.

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Correspondence to Hossein Abootorabi Zarchi.

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I declare that there is no competing financial or non-financial interest in relation to this work. The authors declare that they have no relation with a government agency that has a primary function other than research and education. Also, the authors declare that they are not an official representative or no behalf of the government.

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Hooshmandi Safa, H., Abootorabi Zarchi, H. Eccentricity fault detection in synchronous reluctance machines. Electr Eng 106, 1977–1987 (2024). https://doi.org/10.1007/s00202-023-01990-5

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