# Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 1: Analytical model

Timo Holopainen (Corresponding Author), Asmo Tenhunen, Erkki Lantto, Antero Arkkio

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)

### Abstract

Eccentric rotor motion of an electric motor induces an unbalanced magnetic pull. This eccentricity force may couple the electromagnetic system with the flexural vibration modes of the shaft. This paper presents an analytic model for this eccentricity force allowing an arbitrary rotor motion and transient operation. The general equations were simplified for the constant flux and steady-state operation. These simplified equations correspond well to the results presented earlier.
Original language English 13-24 Electrical Engineering 88 1 https://doi.org/10.1007/s00202-004-0257-z Published - 2005 A1 Journal article-refereed

### Fingerprint

Cage
Eccentricity
Analytical Model
Rotor
Analytical models
Rotors
Electric Motors
Motion
Electric motors
Arbitrary
Fluxes
Model

### Keywords

• analytical methods
• eccentric rotor
• induction motors
• mathematical models
• unbalanced magnetic pull

### Cite this

Holopainen, Timo ; Tenhunen, Asmo ; Lantto, Erkki ; Arkkio, Antero. / Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 1 : Analytical model. In: Electrical Engineering. 2005 ; Vol. 88, No. 1. pp. 13-24.
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title = "Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 1: Analytical model",
abstract = "Eccentric rotor motion of an electric motor induces an unbalanced magnetic pull. This eccentricity force may couple the electromagnetic system with the flexural vibration modes of the shaft. This paper presents an analytic model for this eccentricity force allowing an arbitrary rotor motion and transient operation. The general equations were simplified for the constant flux and steady-state operation. These simplified equations correspond well to the results presented earlier.",
keywords = "analytical methods, eccentric rotor, induction motors, mathematical models, unbalanced magnetic pull",
author = "Timo Holopainen and Asmo Tenhunen and Erkki Lantto and Antero Arkkio",
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journal = "Electrical Engineering",
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Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 1 : Analytical model. / Holopainen, Timo (Corresponding Author); Tenhunen, Asmo; Lantto, Erkki; Arkkio, Antero.

In: Electrical Engineering, Vol. 88, No. 1, 2005, p. 13-24.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 1

T2 - Analytical model

AU - Holopainen, Timo

AU - Tenhunen, Asmo

AU - Lantto, Erkki

AU - Arkkio, Antero

N1 - Project code: V1SU00856

PY - 2005

Y1 - 2005

N2 - Eccentric rotor motion of an electric motor induces an unbalanced magnetic pull. This eccentricity force may couple the electromagnetic system with the flexural vibration modes of the shaft. This paper presents an analytic model for this eccentricity force allowing an arbitrary rotor motion and transient operation. The general equations were simplified for the constant flux and steady-state operation. These simplified equations correspond well to the results presented earlier.

AB - Eccentric rotor motion of an electric motor induces an unbalanced magnetic pull. This eccentricity force may couple the electromagnetic system with the flexural vibration modes of the shaft. This paper presents an analytic model for this eccentricity force allowing an arbitrary rotor motion and transient operation. The general equations were simplified for the constant flux and steady-state operation. These simplified equations correspond well to the results presented earlier.

KW - analytical methods

KW - eccentric rotor

KW - induction motors

KW - mathematical models

KW - unbalanced magnetic pull

U2 - 10.1007/s00202-004-0257-z

DO - 10.1007/s00202-004-0257-z

M3 - Article

VL - 88

SP - 13

EP - 24

JO - Electrical Engineering

JF - Electrical Engineering

SN - 0948-7921

IS - 1

ER -