Spatial linearity of an unbalanced magnetic pull in induction motors during eccentric rotor motions

A. Tenhunen, Timo Holopainen, A. Arkkio

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Abstract

There is an unbalanced magnetic pull between the rotor and stator of the cage induction motor when the rotor is not concentric with the stator. These forces depend on the position and motion of the centre point of the rotor. In this paper, the linearity of the forces in proportion to the rotor eccentricity is studied numerically using time‐stepping finite element analysis. The results show that usually the forces are linear in proportion to the rotor eccentricity. However, the closed rotor slots may break the spatial linearity at some operation conditions of the motor.
Original languageEnglish
Pages (from-to)862-876
JournalCOMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering
Volume22
Issue number4
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Keywords

  • motors
  • magnetic forces
  • rotors

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