An investigation of induction motor zeroth-order magnetic stresses, vibration, and sound radiation

A computational approach is undertaken to better understand what can be one of the primary contributors to sound radiation from induction motors-the n=0 magnetic stresses. An electromagnetic finite-element model, a structural dynamic finite-element model, and an acoustic boundary-element model of an...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2004-03, Vol.40 (2), p.774-777
Main Authors: McDevitt, T.E., Campbell, R.L., Jenkins, D.M.
Format: Article
Language:English
Subjects:
Acoustic noise
Boundary conditions
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electromagnetic fields
Electromagnetic induction
Electromagnetic modeling
Electromagnetic radiation
Exact sciences and technology
Finite element methods
Induction motors
Magnetic properties and materials
Magnetism
Physics
Stators
Stress
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Summary:A computational approach is undertaken to better understand what can be one of the primary contributors to sound radiation from induction motors-the n=0 magnetic stresses. An electromagnetic finite-element model, a structural dynamic finite-element model, and an acoustic boundary-element model of an induction motor are used to illustrate some sources of n=0 electromagnetic stresses, and how their resultant vibration field on the stator can be enhanced by boundary conditions, such as stator supports, to result in peaks in the radiated noise spectrum.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2004.824772