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Computation of induction machine inductances for extended analytical modeling accounting for saturation

Published online by Cambridge University Press:  15 March 1999

B. Lemaire-Semail ,
J. P. Louis  and
F. Bouillault
B. Lemaire-Semail*
Affiliation:
L2EP (UPRES 2697), École Centrale de Lille, B.P. 48, 59651 Villeneuve d'Ascq, France
J. P. Louis
Affiliation:
LESiR (UPRES A CNRS 8029), ENS de Cachan, 61 avenue du Président Wilson, 94235 Cachan, France
F. Bouillault
Affiliation:
LGEP (UMR CNRS 8507), ESE, plateau du Moulon, 91192 Gif-sur-Yvette, France
*
betty.semail@eudil.fr
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Abstract

In this paper, finite element method is used to compute inductance parameters of a squirrel cage induction machine. To take into account saturation effect, saturated equivalent parameters are introduced, which depend on the instantaneous value of the magnetising current. For a balanced induction machine, the particular inductance behaviors allow straightforward flux expressions without any cross saturation effect. Moreover, these expressions are explained thanks to an extended analytical approach considering a magnetic saliency phenomenon by a second order air-gap permeance. A simple way of transformation ratio and leakage inductance computation is also deduced. The numerical results show the compatibility between finite element approach and extended analytical Park's method. Besides, two operating points (at no load and for nominal speed) studied by the both methods give very closed results.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 5 , Issue 3 , March 1999 , pp. 257 - 267
Copyright
© EDP Sciences, 1999

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References

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