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Title: Inclusion of interbar currents in a network-field coupled time-stepping finite-element model of skewed-rotor induction motors

Abstract

In order to include the interbar currents of skewed-rotor inductor motors in finite-element analysis, a three-dimensional (3-D) model is usually necessary. In this paper a two-dimensional multislice time-stepping finite element method of skewed-rotor induction motors is presented to solve such complicated 3-D problems. It is shown that the network of the rotor cage is coupled to finite-element equations so that the interbar currents in the rotor can be taken into account. By arranging the unknowns and mesh-current equations ingeniously, the resultant coefficient matrix of the global system equations are made symmetrical. Compared with 3-D finite-element methods, the computation time for solving field equations with the proposed method is significantly shorter. The model can be used to estimate the high-order harmonic stray losses in induction motors. A comparison between computed and tested results is also given.

Authors:
; ;
Publication Date:
Research Org.:
Hong Kong Polytechnic Univ., Kowloon (HK)
OSTI Identifier:
20000590
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt3; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ELECTRIC MOTORS; FINITE ELEMENT METHOD; ELECTRIC CURRENTS; TWO-DIMENSIONAL CALCULATIONS; COMPARATIVE EVALUATIONS; ENERGY LOSSES

Citation Formats

Ho, S.L., Li, H.L., and Fu, W.N. Inclusion of interbar currents in a network-field coupled time-stepping finite-element model of skewed-rotor induction motors. United States: N. p., 1999. Web. doi:10.1109/20.799070.
Ho, S.L., Li, H.L., & Fu, W.N. Inclusion of interbar currents in a network-field coupled time-stepping finite-element model of skewed-rotor induction motors. United States. doi:10.1109/20.799070.
Ho, S.L., Li, H.L., and Fu, W.N. Wed . "Inclusion of interbar currents in a network-field coupled time-stepping finite-element model of skewed-rotor induction motors". United States. doi:10.1109/20.799070.
@article{osti_20000590,
title = {Inclusion of interbar currents in a network-field coupled time-stepping finite-element model of skewed-rotor induction motors},
author = {Ho, S.L. and Li, H.L. and Fu, W.N.},
abstractNote = {In order to include the interbar currents of skewed-rotor inductor motors in finite-element analysis, a three-dimensional (3-D) model is usually necessary. In this paper a two-dimensional multislice time-stepping finite element method of skewed-rotor induction motors is presented to solve such complicated 3-D problems. It is shown that the network of the rotor cage is coupled to finite-element equations so that the interbar currents in the rotor can be taken into account. By arranging the unknowns and mesh-current equations ingeniously, the resultant coefficient matrix of the global system equations are made symmetrical. Compared with 3-D finite-element methods, the computation time for solving field equations with the proposed method is significantly shorter. The model can be used to estimate the high-order harmonic stray losses in induction motors. A comparison between computed and tested results is also given.},
doi = {10.1109/20.799070},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt3,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}