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Title: Direct modeling of the starting process of skewed rotor induction motors using a multi-slice technique
Authors: Ho, SL 
Fu, W 
Wong, HCC
Keywords: Induction motors
Finite element methods
Issue Date: Dec-1999
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on energy conversion, Dec. 1999, v. 14, no. 4, p. 1253-1258 How to cite?
Journal: IEEE transactions on energy conversion 
Abstract: Both the starting current and the starting torque of induction motors cannot be evaluated and measured accurately and readily. In particular, the geometrical features of the skewed rotor bars are very difficult to study if a general 2-D finite element method is used. This paper presents an approach in using a multi-slice, time stepping 2-D eddy-current finite element method to study the starting processes of skewed rotor induction machines. The fields of the multi-slices are being solved en bloc simultaneously, and thus the eddy current effects can be taken into account directly. New forms of the governing equations for the multi-slice model are derived so as to allow the meshes of the multi-slices to be taken as one 2-D mesh. The resultant algorithm is then very similar to that of general 2-D problems. Special time stepping techniques for studying the starting process of motors are also presented. The performances of motors with skewed and non-skewed rotor are shown. It was found that the simulation results correlated very well with test data.
ISSN: 0885-8969
EISSN: 1558-0059
DOI: 10.1109/60.815055
Rights: © 1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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