A1 Journal article (refereed), original research

Hysteresis Loss in Ferrite Permanent Magnets in Rotating Electrical Machinery

Publication Details
Authors: Egorov Dmitry, Petrov Ilya, Pyrhönen Juha, Link Joosep, Stern Raivo
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Publication year: 2018
Language: English
Related Journal or Series Information: IEEE Transactions on Industrial Electronics
Volume number: 65
Issue number: 12
Start page: 9280
End page: 9290
Number of pages: 11
ISSN: 0278-0046
eISSN: 1557-9948
JUFO-Level of this publication: 3
Open Access: Not an Open Access publication


Hysteresis loss in magnetic poles of electrical machines with ferrite
permanent magnets is studied. A vibrating sample magnetometer is used to
observe the hysteresis behavior of three distinct commercial ferrite
magnet grades. The measurement results indicate the presence of
additional magnetic phases with reduced coercivity in the samples under
study. These phases can act as an additional source of loss in ferrite
magnets. A new modeling concept is introduced to simulate the hysteresis
behavior of the ferrite magnet grades in the 2nd and 1st quadrants of the intrinsic BH
plane. Finite-element-calculated magnetic field distribution is used as
an input for the analytical model to determine the hysteresis loss in
the magnets of two distinct permanent magnet machine designs. The
results indicate that some hysteresis loss in the ferrite permanent
magnet magnetic poles of electrical machines may occur, but it plays a
minor role in practice.

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Last updated on 2019-13-03 at 12:00

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