Numerical Identification of Electromagnetic Force Parameters for Linearized Rotordynamic Model of Cage Induction Motors

[+] Author and Article Information
Timo P. Holopainen

VTT Technical Research Centre of Finland, VTT Industrial Systems, P.O. Box 13022, FIN-02044 VTT, Finland

Asmo Tenhunen

Laboratory of Electromechanics, Helsinki University of Technology, P.O. Box 3000, FIN-02015 HUT, Finland e-mail: asmo.tenhunen@hut.fi

Erkki Lantto

High Speed Tech Ltd., Tekniikantie 4 D, FIN-02150 Espoo, Finlande-mail: erkki.lantto@absnopon.com

Antero Arkkio

Laboratory of Electromechanics, Helsinki University of Technology, P.O. Box 3000, FIN-02015 HUT, Finlande-mail: antero.arkkio@hut.fi

J. Vib. Acoust 126(3), 384-390 (Jul 30, 2004) (7 pages) doi:10.1115/1.1688764 History: Received January 01, 2003; Revised November 01, 2003; Online July 30, 2004
Copyright © 2004 by ASME
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The cross-sectional geometry of the 15 kW cage induction motor
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Cross-sectional geometry of the 18.5 kW cage induction motor with extended air-gap length
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Transient force response of the 15 kW motor at rated load and voltage due to impulse excitation in time domain
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The radial and tangential components of the frequency response function obtained by the long and short samples. The upper curves are radial components. The exponential windowing was used in the short sample.
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Transient force response of the 15 kW motor at rated load and voltage due to the impulse excitation in complex plane
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The calculated frequency response function and the parametric curves obtained by the curve fitting procedure. The upper curves are radial components.
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The electromagnetic force components of the 18.5 kW motor induced by the mechanical impulse. The results obtained by the complete and linearized electromechanical models.
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The amplitude of the FRF between the whirling amplitude and rotational excitation force.
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The parallel and perpendicular component of FRF between the rotational electromagnetic force and the rotational excitation force. The results of complete and linearized model are presented.



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