Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 2: Verification and numerical parameter estimation

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

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8 Citations (Scopus)


Eccentric rotor motion of an electric motor induces an unbalanced magnetic pull. This eccentricity force can be described using a simple parametric model with physical parameters. This model allows an arbitrary rotor motion and transient operation. This paper presents an effective method to estimate the parameters from simulation results of electromagnetic fields. Further, the numerical results verify the form of the proposed parametric model in steady-state operation.
Original languageEnglish
Pages (from-to)25-34
JournalElectrical Engineering
Issue number1
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed



  • eccentric rotor
  • finite-element method
  • induction motors
  • parameter estimation techniques
  • unbalanced magnetic pull

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