Monitoring Torsional Vibrations of Electro-mechanical Systems Using Stator Currents-Reference-Cited by-同舟云学术

Monitoring Torsional Vibrations of Electro-mechanical Systems Using Stator Currents

Published:1998-01-01 Issue:1 Volume:120 Page:72-79
ISSN:1048-9002
Container-title:Journal of Vibration and Acoustics
language:en
Short-container-title:

Author:

Yacamini R.¹,Smith K. S.²,Ran L.²

Affiliation:

1. Department of Electrical Engineering and Micro Electronics, University College, Cork, Ireland

2. Department of Computing and Electrical Engineering, Heriot-Watt University, Edinburgh, Scotland

Abstract

A method is proposed to detect shaft torsional vibrations in AC motors and generators from their stator currents. This is achieved by extracting current components at specific frequencies which are the modulation products of the power system frequency and the vibrating frequency. A general closed form proof of this principle is given for both induction and synchronous machines, and the principle is verified quantitatively by digital simulation and experimental results. The effect of the machine operating point is also investigated. The method is applicable to torsional vibrations induced by different causes. When the oscillating torque is developing and the measured stator current is nonstationary, the Wavelet Transform can be used to extend the application of the proposed method to transient conditions.

Publisher

ASME International

Subject

General Engineering

Link

http://asmedigitalcollection.asme.org/vibrationacoustics/article-pdf/120/1/72/5610918/72_1.pdf

Reference14 articles.

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2. Tavner P. J., and Penman J., 1987, Condition Monitoring of Electrical Machines, John Wiley & Sons, pp. 214–221.

3. Rusche, P. A. E., 1985, “Torsional Monitoring for Diagnosis and Surveillance: Utility Experience,” EPRI Workshop, USA, pp. 52–66.

4. Home B. P., and Walker, D. N., 1985, “Torsional Vibration Monitoring,” EPRI Workshop, USA, pp. 11–23.

5. Ran L. , YacaminiR., and SmithK. S., 1996, “Torsional Vibrations in Electrical Induction Motor Drives during Start-up,” ASME JOURNAL OF VIBRATION AND ACOUSTICS, Vol. 118, April, pp. 242–251.

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