Details
| Original language | English |
|---|---|
| Article number | 6357307 |
| Pages (from-to) | 1407-1415 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 49 |
| Issue number | 4 |
| Publication status | Published - 2013 |
Abstract
This paper describes a calculation method for the electromagnetically excited noise of different types of rotating electrical machines. A numerically gained modal matrix of the stator is used for the analytical calculation of the surface's deflection and thus combines short calculation times of analytical methods with the accuracy of numerical calculations. Considering elliptic deformations due to nonsymmetrical pairs of eigenvectors, as especially occurring for small machines with few teeth, a time-stepping algorithm allows the examination of noncircular spatial harmonics of the deformation. An adapted analytical sound pressure calculation is appended. Finally, a comparison with a measurement of the surface oscillation validates the improved calculation method.
Keywords
- Eigenvectors, electrical machines, magnetic noise, modal analysis, noise prediction
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Magnetics, Vol. 49, No. 4, 6357307, 2013, p. 1407-1415.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Combined analytical-numerical noise calculation of electrical machines considering nonsinusoidal mode shapes
AU - Braunisch, Dirk
AU - Ponick, Bernd
AU - Bramerdorfer, Gerd
N1 - Copyright: Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - This paper describes a calculation method for the electromagnetically excited noise of different types of rotating electrical machines. A numerically gained modal matrix of the stator is used for the analytical calculation of the surface's deflection and thus combines short calculation times of analytical methods with the accuracy of numerical calculations. Considering elliptic deformations due to nonsymmetrical pairs of eigenvectors, as especially occurring for small machines with few teeth, a time-stepping algorithm allows the examination of noncircular spatial harmonics of the deformation. An adapted analytical sound pressure calculation is appended. Finally, a comparison with a measurement of the surface oscillation validates the improved calculation method.
AB - This paper describes a calculation method for the electromagnetically excited noise of different types of rotating electrical machines. A numerically gained modal matrix of the stator is used for the analytical calculation of the surface's deflection and thus combines short calculation times of analytical methods with the accuracy of numerical calculations. Considering elliptic deformations due to nonsymmetrical pairs of eigenvectors, as especially occurring for small machines with few teeth, a time-stepping algorithm allows the examination of noncircular spatial harmonics of the deformation. An adapted analytical sound pressure calculation is appended. Finally, a comparison with a measurement of the surface oscillation validates the improved calculation method.
KW - Eigenvectors
KW - electrical machines
KW - magnetic noise
KW - modal analysis
KW - noise prediction
UR - http://www.scopus.com/inward/record.url?scp=84875582963&partnerID=8YFLogxK
U2 - 10.1109/TMAG.2012.2228214
DO - 10.1109/TMAG.2012.2228214
M3 - Article
AN - SCOPUS:84875582963
VL - 49
SP - 1407
EP - 1415
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 4
M1 - 6357307
ER -