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

Author

McDevitt, Timothy E. ; Campbell, Robert L. ; Jenkins, David M.

Author_Institution

Appl. Res. Lab., Pennsylvania State Univ., State College, PA, USA

Volume

40

Issue

2

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

774

Lastpage

777

Abstract

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.

Keywords

acoustic emission; boundary-elements methods; computational electromagnetics; finite element analysis; induction motors; machine theory; stators; acoustic boundary-element model; boundary conditions; computational approach; dynamic response; electric machines; electromagnetic finite-element model; induction motor; magnetic noise; radiated noise spectrum; resultant vibration field; sound radiation; stator supports; structural dynamic finite-element model; zeroth-order magnetic stresses; Acoustic noise; Boundary conditions; Electromagnetic fields; Electromagnetic induction; Electromagnetic modeling; Electromagnetic radiation; Finite element methods; Induction motors; Stators; Stress;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.824772

Filename

1284529