Electromagnetic forces of the cage rotor in conical whirling motion

A. Tenhunen, T. Benedetti, Timo Holopainen, A. Arkkio

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)

Abstract

The paper deals with the electromagnetic forces in induction machines when the rotor is in cylindrical whirling motion, symmetric conical whirling motion or a combination of these. These motions describe the eccentric movements of the rigid rotor in induction machines. Time stepping finite element analysis is used for solving the magnetic field, and the forces are calculated from the airgap by a method based on the principle of virtual work. The forces are measured for a test motor equipped with active magnetic bearings. The active magnetic bearings are used to generate the eccentric rotor motions and also to measure the electromagnetic forces. The computed and calculated forces show relatively good agreement. Based on the calculated and measured results, a simple analytical model is developed to describe the electromagnetic forces of the rigid rotor motions.
Original languageEnglish
Pages (from-to)563-568
Number of pages6
JournalIEE Proceedings: Electric Power Applications
Volume150
Issue number5
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

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Rigid rotors
Magnetic bearings
Rotors
Analytical models
Magnetic fields
Finite element method

Cite this

Tenhunen, A. ; Benedetti, T. ; Holopainen, Timo ; Arkkio, A. / Electromagnetic forces of the cage rotor in conical whirling motion. In: IEE Proceedings: Electric Power Applications. 2003 ; Vol. 150, No. 5. pp. 563-568.
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Electromagnetic forces of the cage rotor in conical whirling motion. / Tenhunen, A.; Benedetti, T.; Holopainen, Timo; Arkkio, A.

In: IEE Proceedings: Electric Power Applications, Vol. 150, No. 5, 2003, p. 563-568.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Electromagnetic forces of the cage rotor in conical whirling motion

AU - Tenhunen, A.

AU - Benedetti, T.

AU - Holopainen, Timo

AU - Arkkio, A.

N1 - Project code: V1SU00856

PY - 2003

Y1 - 2003

N2 - The paper deals with the electromagnetic forces in induction machines when the rotor is in cylindrical whirling motion, symmetric conical whirling motion or a combination of these. These motions describe the eccentric movements of the rigid rotor in induction machines. Time stepping finite element analysis is used for solving the magnetic field, and the forces are calculated from the airgap by a method based on the principle of virtual work. The forces are measured for a test motor equipped with active magnetic bearings. The active magnetic bearings are used to generate the eccentric rotor motions and also to measure the electromagnetic forces. The computed and calculated forces show relatively good agreement. Based on the calculated and measured results, a simple analytical model is developed to describe the electromagnetic forces of the rigid rotor motions.

AB - The paper deals with the electromagnetic forces in induction machines when the rotor is in cylindrical whirling motion, symmetric conical whirling motion or a combination of these. These motions describe the eccentric movements of the rigid rotor in induction machines. Time stepping finite element analysis is used for solving the magnetic field, and the forces are calculated from the airgap by a method based on the principle of virtual work. The forces are measured for a test motor equipped with active magnetic bearings. The active magnetic bearings are used to generate the eccentric rotor motions and also to measure the electromagnetic forces. The computed and calculated forces show relatively good agreement. Based on the calculated and measured results, a simple analytical model is developed to describe the electromagnetic forces of the rigid rotor motions.

U2 - 10.1049/ip-epa:20030365

DO - 10.1049/ip-epa:20030365

M3 - Article

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JO - IET Electric Power Applications

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SN - 1751-8660

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