Magnetism and Stray Currents in Rotating Machinery-Reference-Cited by-同舟云学术

Magnetism and Stray Currents in Rotating Machinery

Published:1996-01-01 Issue:1 Volume:118 Page:225-228
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Nippes P. I.¹

Affiliation:

1. Magnetic Products and Services, Inc., Holmdel, NJ 07733

Abstract

The case for elimination of stray currents and magnetism in turbomachinery is being recognized as an issue to be dealt with in industries that design and operate rotating machinery. Of main concern are bearings, seals, gears, couplings, etc. Resulting problems extend from surface damage to unit crashes. It is important to recognize the symptoms, to heed the warnings, and to enact preventive and corrective measures. Recommendations are to eliminate or minimize the source, and to bond the machinery to ground, especially the shaft, with a reliable shaft brush and a qualified current monitor. Information and guidance are provided from MPS job files covering some of the 200 installations visited in the past 15 years.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/118/1/225/5535566/225_1.pdf

Reference9 articles.

1. Alger P. L. , and SamsonW., 1924, “Shaft Currents in Electric Machines,” AIEE Trans., Vol. 43, pp. 235–245.

2. Ammann, C, Reichert, K., et al., “Shaft Voltages in Generators With Static Excitation Systems—Problems and Solutions,” Swiss Federal Institute of Technology, Zurich, Switzerland; Brown Boveri Company, Baden, Switzerland.

3. Nippes, P. I., and Sohre, J. S., 1978, “Electromagnetic Shaft Currents and Demagnetization of Rotors of Turbines and Compressors,” presented at the 7th Turbomachinery Symposium, Texas A&M University, Houston, TX.

4. Nippes, P. I., and Sohre, J. S., et al., 1981, “Panel on Electromagnetic Shaft Current Control,” presented at 10th Turbomachinery Symposium, Texas A&M University, Houston, TX.

5. Nippes, P. I., 1992, “Detecting and Identifying Vibration Problems in Rotating Electrical Machinery,” presented at the 16th Annual Meeting of the Vibration Institute, Williamburg, VA.

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1. Early Warning of Developing Problems in Rotating Machinery as Provided by Monitoring Shaft Voltages and Grounding Currents;IEEE Transactions on Energy Conversion;2004-06