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1 - Vibration Monitoring of Induction Motors and Case Histories on Shaft Misalignment and Soft Foot

Published online by Cambridge University Press:  17 February 2021

William T. Thomson
William T. Thomson
Affiliation:
EM Diagnostics Ltd., Scotland
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Summary

Chapter 1 provides an overview of publications on sources of vibration in electrical machines.Problems in rolling element bearings account for the largest number of failures of induction motors, therefore a review is presented on the use of vibration measurements and spectrum analysis to diagnose faults in rolling element bearings.The practical difficulty of accessing the housings of rolling element bearings is strongly emphasised, because if bearing housings cannot be accessed then it is more difficult to diagnose bearing faults. A brief overview of shaft misalignment and soft foot in induction motor drives is included, and five industrial case histories are presented on vibration analysis to detect shaft misalignment and/or soft foot.

Type
Chapter
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Vibration Monitoring of Induction Motors
Practical Diagnosis of Faults via Industrial Case Studies
 , pp. 1 - 46
Publisher: Cambridge University Press
Print publication year: 2020

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References

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Further Reading

Bonnett, A. H. and Soukup, G. C., Rotor Failures in Squirrel Cage Induction Motors, IEEE Transactions on Industry Applications, IA-22 (6), 1986, pp. 1165–73.Google Scholar
Bonnett, A. H. and Soukup, G. C., Analysis of Rotor Failures in Squirrel-Cage Induction Motors, IEEE Transactions on Industry Applications, 24 (6), 1988, pp. 1124–30.CrossRefGoogle Scholar
Bonnett, A. H. and Soukup, G. C., Cause and Analysis of Stator and Rotor Failures in Three-Phase Squirrel-Cage Induction Motors, IEEE Transactions on Industry Applications, 28 (4), 1992, pp. 921–37.Google Scholar
Barr, H., Bonnett, A. H. and Yung, C., Understanding Vertical Motor Bearing Systems and Minimizing Their Failures, IEEE Petroleum and Chemical Industry Conference, 2007, pp. 1–9.Google Scholar

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