Self-Healing Permanent Magnet Machines

The concept of self-healed permanent magnet (PM) machines is presented in this article. In order to demonstrate its technical feasibility, the remagnetization behavior of hard ferrite magnets in closed circuit as a function of temperature is initially discussed. Next, the experimental assessment of...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2021-10, Vol.57 (10), p.1-4
Main Authors: Perigo, E. A., Castagnini, A., Secondo, G., Tremelling, D.
Format: Article
Language:English
Subjects:
Circuits
Coercivity
Demagnetization
electrical machines
Ferrites
hard magnetic materials
Magnetic flux
Magnetic separation
Magnetism
Permanent magnets
Perpendicular magnetic anisotropy
Physical properties
Rotors
Stator windings
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Summary:The concept of self-healed permanent magnet (PM) machines is presented in this article. In order to demonstrate its technical feasibility, the remagnetization behavior of hard ferrite magnets in closed circuit as a function of temperature is initially discussed. Next, the experimental assessment of the remagnetization of engineered parts-with distinct geometry/dimensions from those of the material assessment-installed in an interior PM motor is addressed. Although the concept is agnostic regarding the PM material implemented, this study focused on ferrites since it explores best its benefits due to a unique combination of low criticality of elements, intrinsic physical properties, and cost accessibility.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2021.3106500