NDLI: Rotor eccentricity fault detection of a DC motor

Content Provider	IEEE Xplore Digital Library
Author	Haji, M. Toliyat, H.A.
Copyright Year	2001
Description	Author affiliation: Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA (Haji, M.)
Abstract	This paper presents a model of the DC motor with an eccentric rotor. The winding function theory shows the effect of the eccentricity fault on the motor inductances and simulation is done using a nonsymmetric air-gap function. A modified equation is presented to describe the rotor slot harmonics in the DC motor. To detect the fault, a pattern recognition technique is utilized. The proposed algorithm works at steady state and uses armature current as input. In order to provide the appropriate feature for the classifier, the rotor speed is needed, therefore the speed is estimated from armature current, using commutation harmonics. The experimental results obtained from a 3 hp shunt DC motor shows the strength of this method. In order to cover many different motor load conditions, data are collected at different speeds for both a healthy DC motor and a DC motor with an unbalance load which can simulate static eccentricity.
Sponsorship	IEEE Ind. Electron. Soc.
Starting Page	591
Ending Page	596
File Size	559420
Page Count	6
File Format	PDF
ISBN	0780371089
DOI	10.1109/IECON.2001.976551
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rotors Fault detection DC motors Induction machines Synchronous motors Air gaps Fault diagnosis Costs Frequency Stators
Content Type	Text
Resource Type	Article

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