Vibration Reduction in Electric Machine by Interlocking of the Magnets

Gunhee Jang, D. K. Lieu

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A principal source of vibration in permanent magnet motors and generators is the traveling attractive forces from the rotating permanent magnets acting on the stator. This magnetic force can be calculated from the flux density by finite element methods and the Maxwell stress tensor, and the characteristics of the frequency components can be investigated by means of a Fourier decomposition of the traveling magnetic force. To reduce the vibration level, it is desirable to reduce both the number of frequency components of the magnetic force and their amplitudes. In this current research, it is demonstrated that vibration levels may be significantly attenuated, without changing the performance of the motor, by a change of the magnet geometry and an increase of the magnetic energy product near pole transitions.

Original languageEnglish
Pages (from-to)1423-1426
Number of pages4
JournalIEEE Transactions on Magnetics
Volume29
Issue number2
DOIs
StatePublished - 1993 Jan 1

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Electric machinery
Permanent magnets
Magnets
Stators
Tensors
Poles
Fluxes
Decomposition
Finite element method
Geometry

Cite this

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Vibration Reduction in Electric Machine by Interlocking of the Magnets. / Jang, Gunhee; Lieu, D. K.

In: IEEE Transactions on Magnetics, Vol. 29, No. 2, 01.01.1993, p. 1423-1426.

Research output: Contribution to journalArticle

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