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Induction-motor dynamic analysis during power-supply imbalances

Authors
Journal
International Journal of Electrical Power & Energy Systems
0142-0615
Publisher
Elsevier
Publication Date
Volume
3
Issue
4
Identifiers
DOI: 10.1016/0142-0615(81)90007-7

Abstract

Abstract It is widely recognized that the rotor-bar skin effect strongly influences induction-motor operation during unbalanced conditions. However, classic induction-machine dynamic models ignore this effect. A more general machine representation is derived that can predict the rotor-bar skin effect over the full range of dynamic induction-machine operation. The model is used to examine the starting of a motor fed by an open-delta transformer bank. The need to account for the rotor-bar skin effect is explained, and comparisons between motors starting with open-delta and balanced feeds are made.

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