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7. Glossary
Bruit magnétique; magnetic noise
Airborne or solid acoustic radiation caused by electromagnetic excitations, not to be confused with electromagnetic noise in the field of electromagnetic compatibility.
Spatial order; wavenumber
Spatial frequency of a flux or vibration wave along the air gap. A spatial order of 2 corresponds to a 4-node wave, with 2 minima and 2 maxima.
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Bibliography
Bibliography
Standards and norms
IEC 60034-9 Rotating electrical machines – Part 9: Noise limits
Patents
[B1] Electrical machines with reduced cogging US Patent 7714473 B2
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