Title
Effects of manufacturing tolerances of permanent magnets in fractional slot permanent magnet synchronous machinesAuthor
Author (from another institution)
Published Date
2019Publisher
IETKeywords
Synchronous machinesMagnetization curves
Hysteresis
Barkhausen and related effects
Finite element analysis
Abstract
The fractional slot permanent magnet synchronous machines are well-known for their low torque ripple. However, in mass-production machines, not all the permanent magnets are identical due to the manuf ... [+]
The fractional slot permanent magnet synchronous machines are well-known for their low torque ripple. However, in mass-production machines, not all the permanent magnets are identical due to the manufacturing tolerances and new torque harmonics could appear. In addition, the magnetic field is modified and unbalanced magnetic pull (UMP) could happen. Apart from that it is important to study the effect on vibrations since the magnetic field is no longer ideal. So, here, a study of the effect of unevenly magnetised permanent magnet distribution on torque ripples, unbalance magnetic pull, and vibrations is proposed. Apart from that, the tolerance grade sensitivity is studied. Finally, experimental tests show good agreement with finite element
analysis. [-]
Publisher’s version
http://dx.doi.org/10.1049/joe.2018.8199ISSN
2051-3305Published at
Journal of Engineering-JOE Nº. 17. Pp. 4060-4064. IET, 2019Document type
ArticleVersion
PublishedRights
© The AuthorsAccess
Open AccessCollections
- Articles - Engineering [183]
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