The detection of inter-turn short circuits in the stator windingsof operating motors
Joksimovic, G.M.
Penman, J.
Dept. of Electr. Eng., Montenegro Univ.;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Oct 2000
Volume: 47,
Issue: 5
On page(s): 1078-1084
ISSN: 0278-0046
References Cited: 14
CODEN: ITIED6
INSPEC Accession Number: 6729437
Digital Object Identifier: 10.1109/41.873216
Current Version Published: 2002-08-06
Abstract
This paper develops a winding-function-based method for modeling
polyphase cage induction motors with inter-turn short circuits in the
machine stator winding. Analytical consideration which sheds light on
some components of the stator current spectra of both healthy and faulty
machines is developed. It is shown that, as a result of the nature of
the cage rotor, no new frequency components of the line current spectra
can appear as a consequence of the fault. Only a rise in some of the
frequency components which already exist in the line current spectra of
a healthy machine can be observed. An experimental setup comprising a 3
kW delta-connected motor loaded by a generator was used to validate this
approach. The experimental results obtained clearly validate the
analytical and simulation results
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