6. Conclusion

Although magnetic noise is a phenomenon that has been known and studied since the 1940s, it is sufficiently complex that few general rules for quiet design can be established. In many cases, numerical simulation of the motor's vibro-acoustic behavior is indispensable to ensure that noise levels remain tolerable.

What's more, minimizing magnetic noise often runs counter to other electrical, thermal or mechanical design objectives: for example, enlarging the air gap reduces magnetic noise, but significantly degrades efficiency.

We have seen that analytical models exist that are reliable enough to be used...

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page Experimental characterization and diagnosis of magnetic noise

Glossary

Bibliography

(1) - BERANEK (L.L.), VER (I.L.) - Noise and vibration control engineering (Ingénierie du contrôle des bruits et vibrations). - Wiley interscience (1992).
(2) - LE BESNERAIS (J.), FASQUELLE (A.), HECQUET (M.), LANFRANCHI (V.), BROCHET (P.),...

Standards and norms

Electric drive – Rotating electrical machines for rail and road vehicles – Part 2: AC motors powered by electronic converters - CEI 60349-2 - 2010
Machines électriques tournantes. Partie 9 : Limites de bruits - CEI 60034-9 - 2007
Rotating electrical machines. Part 14: Mechanical vibration of certain machines with shaft heights greater than or equal to 56 mm. – Vibration measurement, assessment and limits...