A Park transform-based method for condition monitoring of three-phase electromechanical systems
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Leeb_A park transform-based.pdf
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Author(s)
Laughman, Christopher Reed
Leeb, Steven B.
Norford, Leslie Keith
Shaw, Steven R.
Armstrong, Peter R.
Date Issued
July 2010
Journal
Proceedings of the 5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Laughman, C. et al. “A Park Transform-based Method for Condition Monitoring of Three-phase Electromechanical Systems.” Proceedings of the 5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010). MO314–MO314. © Copyright 2010 IEEE
Version
Final published version
Abstract
This paper presents a Park transform-based method for preprocessing stator current data from a motor and transforming it into a form that is useful for fault detection and diagnostics. The proposed method generates power signatures that are invariant to the initial electrical angle of the voltage when the motor is connected to the utility, and can also adapt to variations in the electrical angle of the supply voltage over time. A modified nonlinear least squares algorithm identifies and tracks the parameters of the supply voltage over time, ensuring that the supply voltage and the argument of the Park transformation remain synchronized. Experimental results are presented that illustrate the method's effectiveness for identifying changes in the mechanical load on a 3/4 HP refrigeration compressor.
MIT Department
Massachusetts Institute of Technology. Department of Architecture
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1049/cp.2010.0030
