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A vibrational model using modal shapes and magnetic forces: experimental results for a permanent magnet machine

Ein Schwingungsmodell mit Hilfe der Modalen Analyse und der magnetischen Kräfte: experimentelle Ergebnisse für eine Permanentmagnetmaschine

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Contents

The frequency inverter current spectrum generates a complex magnetic field in the airgap producing attracting forces having a wide spectrum and leads to audible noise. A mathematical model is presented, predicting vibrations of a permanent magnet machine, based on the modal analysis technique including mechanical damping. Modal forces produced by the magnetic field, are related to the supply currents using a finite element calculation. Experimental results are presented.

Übersicht

Das Stromspektrum eines Frequenzumrichters generiert ein komplexes magnetisches Feld im Luftspalt, welches Anziehungskräfte mit einem breiten Frequenzgang hervorruft, die wiederum zu Geräuschen führen. Ein mathematisches Modell wird vorgestellt, welches es ermöglicht, die Schwingungen einer permanent erregten Maschine vorauszusagen. Es basiert auf der Modalen Analyse und enthält die mechanische Dämpfung. Vom Magnetfeld hervorgerufene modale Kräfte werden mit den eingespeisten Strömen mittels der Finite-Elemente-Methode in Verbindung gebracht. Experimentelle Ergebnisse werden dargestellt.

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Authors and Affiliations

  1. Dep. EE-Lab. EMA, Katholieke Universiteít Leuyen, Kardinaal Mercierlaan 94, B-3001, Leuven, Belgium

    D. Verdyck &  R. Belmans

Authors
  1. D. Verdyck
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  2. R. Belmans
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Additional information

The authors wish to thank the Council of the Belgian National Science Foundation for granting a project sponsoring the research.

This paper presents results of the Belgian programme on Interuniversity Poles of Attraction initiated by the Belgian State, Prime Minister's Office, Science Policy Programming. The scientific responsibility is assumed by the authors.

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Verdyck, D., Belmans, R. A vibrational model using modal shapes and magnetic forces: experimental results for a permanent magnet machine. Archiv f. Elektrotechnik 77, 383–389 (1994). https://doi.org/10.1007/BF01573355

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  • DOI: https://doi.org/10.1007/BF01573355

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