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Detection of stator short circuits in VSI-fed brushless DC motors using wavelet transform

Authors :
Awadallah, Mohamed A.
Morcos, Medhat M.
Gopalakrishnan, Suresh
Nehl, Thomas W.
Source :
IEEE Transactions on Energy Conversion. March, 2006, Vol. 21 Issue 1, p1, 8 p.
Publication Year :
2006

Abstract

The paper presents methodologies to detect and locate short-circuit faults on the stator winding of VSI-fed PM brushless dc motors. Normal performance characteristics of the motor are obtained through a discrete-time lumped-parameter network model. The model is modified to accommodate shortcircuit faults in order to simulate faulty operation. Fauit signatures are extracted from the waveforms of electromagnetic torque and phase-voltage summation using wavelet transform. Three independent detection techniques are introduced. Experimental measurements agree acceptably with simulation results, and validate the proposed methods. This work sets forth the fundamentals of an automatic fault detector and iocator, which can be used in a fault-tolerant drive. Index Terms--Brushless dc motor, fault detection, wavelet transform.

Details

Language :
English
ISSN :
08858969
Volume :
21
Issue :
1
Database :
Gale General OneFile
Journal :
IEEE Transactions on Energy Conversion
Publication Type :
Academic Journal
Accession number :
edsgcl.143216179