Axial Stray Flux Sensor Proposal for Three-Phase Induction Motor Fault Monitoring by Means of Orbital Analysis

This paper proposes a new form of stray flux sensor, placed on the inner side of the machine rear end plate, in order to monitor the presence and evolution of some most common faults in three-phase induction motors. The fault indicator is based on analysis of orbits built from time flux signals coll...

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Bibliographic Details
Published inIEEE sensors journal Vol. 20; no. 20; pp. 12317 - 12325
Main Authors Filho, Paulo C. M. Lamim, Santos, Deivity C., Batista, Fabiano B., Baccarini, Lane M. R.
Format Journal Article
LanguageEnglish
Published New York IEEE 15.10.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Circuit faults
End plates
Flux
Induction motors
Misalignment
Monitoring
Orbits
Predictive maintenance
Sensors
Short circuits
Stators
stray flux sensor
three-phase induction motor
Vibrations
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ISSN1530-437X
1558-1748
DOI10.1109/JSEN.2020.2999547

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Summary:This paper proposes a new form of stray flux sensor, placed on the inner side of the machine rear end plate, in order to monitor the presence and evolution of some most common faults in three-phase induction motors. The fault indicator is based on analysis of orbits built from time flux signals collected by the sensor. The effectiveness of this methodology was checked considering three types of faults under three different load conditions: incipient inter-turn short circuits, unbalanced voltage supplies and misalignment, all with 0%, 50% and 100% loads. The experimental results showed a viability of the technique for diagnosing and monitoring of induction motors. This can be adapted and used in predictive maintenance in industry.
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ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2020.2999547