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Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 2: Verification and numerical parameter estimation |
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| Authors: | T. P. Holopainen A. Tenhunen E. Lantto A. Arkkio |
| Affiliation: | (1) VTT Industrial Systems, P.O. Box 13022, 02044 VTT, Finland;(2) Laboratory of Electromechanics, Helsinki University of Technology, P.O. Box 3000, 02015 HUT, Finland;(3) High Speed Tech Ltd., Tekniikantie 4 D, 02150 Espoo, Finland;(4) Present address: ABB Oy, Electrical Machines, P.O. Box 186, 00381 Helsinki, Finland |
| Abstract: | 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. |
| Keywords: | Eccentric rotor Finite-element method Induction motors Parameter estimation techniques Unbalanced magnetic pull |
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