Evaluation of Magnet Demagnetization Behavior in Permanent Magnet Linear Synchronous Motors
DOI:
https://doi.org/10.64470/elene.2025.1005Keywords:
Demagnetization, Permanent Magnet Linear Synchronous Motor, Magnetic Coercivity, Safe OperatingAbstract
This paper focus on investigating the demagnetization behavior of permanent magnets in Permanent Magnet Linear Synchronous Motors (PMLSMs) under varying thermal and electrical operation conditions. For this, two complementary Finite Element Method-based approaches are used. The first method utilized magnetostatic analysis to determine the B-H operating points of the magnets under worst-case conditions, allowing the identification of critical regions that tend to move away from the irreversible magnetic field. The second method employed time-domain transient analysis to monitor changes in the induced voltage under varying temperatures and stator current levels. The results revealed that increasing current and temperature significantly reduced the permanent flux density, indicating partial or complete demagnetization. Furthermore, the demagnetization thresholds were shown through safe operating area curves
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No datasets were generated or analyzed during the current study.
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Copyright (c) 2025 Enes Yucel, Mehmet Cunkas, Łukasz Knypiński (Author)
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain copyright of their work and grant the journal the right to publish it under the Creative Commons Attribution 4.0 International License (CC BY 4.0). This allows for maximum dissemination and reuse with appropriate citation.
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Selçuk University Research Foundation
Grant numbers 24111004
ORCID 
