NDLI: Application of Piezoelectric Sensors to Rotor Fault Diagnostics in Squirrel-Cage Induction Machines

Content Provider	IEEE Xplore Digital Library
Author	Sizov, G.Y. Chia-Chou Yeh Demerdash, N.
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Marquette Univ., Milwaukee, WI (Sizov, G.Y.; Chia-Chou Yeh; Demerdash, N.)
Abstract	In this paper, application of a piezoelectric vibration sensor to induction motor fault diagnostics is investigated. More specifically, a piezoelectric sensor is used to diagnose broken bar faults in squirrel-cage induction machines. The piezoelectric vibration sensor described in this paper offers a number of advantages when compared to other conventional vibration monitoring devices, such as accelerometers, velomitors, proximity probes, etc. These advantages can be summarized as follows: low cost, ease of implementation, and relatively high bandwidth. Use of a vibration signal as a medium for rotor fault diagnostics may result in a simplification of the diagnosis procedure, since both the fault index and the slip (speed) can be estimated from one signal. It is well known that rotor faults result in torque and possible consequent speed oscillations at twice the slip frequency, 2sf. These torque and speed oscillations/pulsations, in turn, produce detectable vibrations that can be utilized for purposes of rotor fault diagnostics. Moreover, radial forces produced as a result of such faults may result in increased vibration amplitude at the same, 2sf, frequency, which can further amplify the fault index, and hence make the proposed technique more reliable. Experimental results on broken bar diagnostics are presented here to demonstrate the validity and efficacy of this approach.
Starting Page	1
Ending Page	6
File Size	361289
Page Count	6
File Format	PDF
ISBN	9781424422784
ISSN	01972618
DOI	10.1109/08IAS.2008.23
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-05
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Accelerometers Torque Induction motors Rotors Sensor phenomena and characterization Frequency Induction machines Piezoelectric devices Probes Monitoring
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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