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Eddy-Current Losses in Bearing Assemblies of High-Speed Electromechanical Energy Transducers with High-Coercitive Permanent Magnets


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DOI: https://doi.org/10.15866/iree.v12i4.13407

Abstract


This paper is devoted to the study of magnetization of the rotary bodies of bearing supports of electromechanical energy transducers with high-coercitive permanent magnets due to scattering field completing through the shaft. Also, this paper proved that this effect occurs in all electrical machines with high-coercitive permanent magnets. Results of the researches showed that looses due to magnetization of rotary bodies of baring supports can reach 60 W per one bearing for high-speed electromechanical energy transducer with rate power 100 kW and rotation speed 60000 rpm.
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Keywords


Eddy Current; High-Coercitive Permanent Magnets (HCPM); High-Frequency Electromechanical Energy Transducer

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