Eur. Phys. J. Appl. Phys.
Volume 39, Number 2, August 2007NUMELEC 2006
|Page(s)||159 - 163|
|Section||Magnetism and Superconductivity|
|Published online||12 July 2007|
Nonlinear multi-harmonic finite-element simulation of a capacitor motor
Katholieke Universiteit Leuven, Campus Kortrijk, Etienne
Sabbelaan 53, 8500 Kortrijk, Belgium
2 Institut für Theorie Elektromagnetischer Felder, Technische Universität Darmstadt, Schloßgartenstraße 8, 64289 Darmstadt, Germany
Corresponding author: firstname.lastname@example.org
Accepted: 12 June 2007
Published online: 12 July 2007
Steady-state operation modes of three-phase induction machines can be efficiently simulated by 2D nonlinear time-harmonic finite-element models, although only induced currents with respect to the fundamental air-gap field are correctly taken into account. This technique does not generalise to single-phase induction machines. An approach based on multiple rotor models and a spectral decomposition of the air-gap field enables to consider higher harmonic air-gap field contributions. In a capacitor-motor model, the first, third and fifth forward and backward rotating components give raise to different frequencies in the rotor which result in different eddy-current effects. The torque dip due to the third harmonic is accurately simulated.
PACS: 84.50.+d – Electric motors / 02.70.Dh – Finite-element and Galerkin methods
© EDP Sciences, 2007
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