Skip to main content
SpringerLink
Log in

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

  • Published:
Electrical Engineering Aims and scope Submit manuscript

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14

Similar content being viewed by others

References

  1. Freise W, Jordan H (1962) Einseitige magnetische Zugkräfte in Drehstrommaschinen. ETZ: elektrotech Z Ausg A 83:299–303

  2. Früchtenicht J, Jordan H, Seinsch HO (1982) Exzentrizitätsfelder als Ursache von Laufinstabilitäten bei Asynchronmaschinen. Part 1: Elektromagnetissche Federzahl und elektromagnetische Dämpfungskonstante. Part 2: Selbsterregte Biegeeigenschwingungen des Läufers. Arch Electrotech 65:271–292

    Google Scholar 

  3. Belmans R, Vandenput A, Geysen W (1987) Influence of unbalanced magnetic pull on the radial stability of flexible-shaft induction machines. IEE Proc. 134B:101–109

    Google Scholar 

  4. Arkkio A, Antila M, Pokki K, Simon A, Lantto E (2000) Electromagnetic force on a whirling cage rotor. IEE Proc Elect Power Applic 147:353–360

    Article  Google Scholar 

  5. Tenhunen A, Holopainen TP, Arkkio A (2003) Impulse method to calculate the frequency response of the electromagnetic forces on whirling cage rotors. IEE Proc Elect Power Applic 150:752–756 DOI: 10.1049/ip-epa:20030192

  6. Holopainen TP, Tenhunen A, Lantto E, Arkkio A (2004) Numerical identification of electromagnetic force parameters for linearized rotordynamic model of cage induction motors. J. Vibrat Acoust (in press).

  7. Holopainen TP, Tenhunen A, Lantto E, Arkkio A (2004) Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 1: Analytical model. Electr Eng (in press).

    Google Scholar 

  8. Arkkio A (1987) Analysis of induction motors based on the numerical solution of the magnetic field and circuit equations. Acta Polytech Scand, Elect Eng Ser No 59, Finnish Academy of Technology, Helsinki, http://lib.hut.fi/Diss

  9. Coulomb JL (1983) A methodology for the determination of global electromechanical quantities from a finite element analysis and its application to the evaluation of magnetic forces, torques and stiffness. IEEE Trans Magn 19:2514–2519

    Article  Google Scholar 

  10. Zayed AI, Temme NM, Jameson P (1996) Special functions. In: Zwillinger D (ed) Standard mathematical tables and formulae, 30th edn. CRC Press, Boca Raton, FL, pp 447–568

  11. Ewins DJ (2000) Modal testing: theory, practice and application, 2nd edn. Research Studies Press, Baldock, UK

    Google Scholar 

  12. Tenhunen A, Holopainen T, Arkkio A (2003) Spatial linearity of an unbalanced magnetic pull in induction motors during eccentric rotor motion. Int J Comput Math Elect Electron Eng 22:862–876

    Article  Google Scholar 

  13. Smith AC, Dorrell DG (1996) Calculation and measurement of unbalanced magnetic pull in cage induction motors with eccentric rotors. Part 1: Analytical model. Part 2: Experimental investigation. IEE Proc Electr Power Applic 143:193–210

    Article  Google Scholar 

  14. Holopainen TP, Tenhunen A, Arkkio A (2004) Electromechanical interaction in rotordynamics of cage induction motors. J Sound Vibr (in press)

Download references

Acknowledgements

The authors gratefully acknowledge the financial support of the National Technology Agency of Finland (Tekes).

Author information

Author notes

  1. T. P. Holopainen

    Present address: ABB Oy, Electrical Machines, P.O. Box 186, 00381, Helsinki, Finland

Authors and Affiliations

  1. VTT Industrial Systems, P.O. Box 13022, 02044 VTT, Finland

    T. P. Holopainen

  2. Laboratory of Electromechanics, Helsinki University of Technology, P.O. Box 3000, 02015 HUT, Finland

    A. Tenhunen & A. Arkkio

  3. High Speed Tech Ltd., Tekniikantie 4 D, 02150, Espoo, Finland

    E. Lantto

Authors
  1. T. P. Holopainen
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. Tenhunen
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. E. Lantto
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. A. Arkkio
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to T. P. Holopainen.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Holopainen, T.P., Tenhunen, A., Lantto, E. et al. Unbalanced magnetic pull induced by arbitrary eccentric motion of cage rotor in transient operation. Part 2: Verification and numerical parameter estimation. Electr Eng 88, 25–34 (2005). https://doi.org/10.1007/s00202-004-0258-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00202-004-0258-y

Keywords

Search

Navigation