NDLI: On-line load test for induction machine stator inter-turn fault detection under stator electrical asymmetries

Content Provider	IEEE Xplore Digital Library
Author	Patel, D.C. Chandorkar, M.C.
Copyright Year	2010
Description	Author affiliation: Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India (Patel, D.C.; Chandorkar, M.C.)
Abstract	The stator inter-turn faults and stator electrical asymmetries such as stator resistance and inductance unbalance generate similar negative sequence current signatures in the induction machine. Hence the stator inter-turn fault is one of the most difficult faults to discriminate and detect in an induction machine. Discrimination of the stator inter-turn fault from stator electrical asymmetry essentially helps to arrange maintenance in a proper schedule. In this paper, a simple on-line load test is proposed to detect the presence of stator inter-turn fault under stator electric asymmetrical condition of the machine. The proposed test is based on the observation of steady-state stator current locus with change in load. The test procedure does not require additional sensors, training and database, past history of the machine and speed measurement. It is also applicable to any unknown machine. This paper presents analytical studies and experiments on a faulted and electrically asymmetrical motors to confirm the simplicity and effectiveness of the proposed load test.
Starting Page	933
Ending Page	938
File Size	803658
Page Count	6
File Format	PDF
ISBN	9781424452255
ISSN	1553572X
DOI	10.1109/IECON.2010.5674926
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stator windings Circuit faults Resistance Induction motors Steady-state Rotors
Content Type	Text
Resource Type	Article

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