Magnetic Thrust Bearing Operation and Industrial Pump Application-Reference-Cited by-同舟云学术

Magnetic Thrust Bearing Operation and Industrial Pump Application

Published:1997-01-01 Issue:1 Volume:119 Page:168-173
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Allaire P. E.¹,Maslen E. H.¹,Lewis D. W.¹,Flack R. D.¹

Affiliation:

1. Department of Mechanical, Aerospace, and Nuclear Engineering, ROMAC Laboratories, University of Virginia, Charlottesville, VA 22903

Abstract

Magnetic bearings represent a new bearing technology, which has some advantages over conventional fluid film and wiling element bearings for some applications. The paper describes the basic concepts of magnetic thrust bearing operation involving the magnetic actuator, electronic controls, power amplifier, and sensor. The magnetic actuator is a magnetic circuit, which generates attractive forces. These support the rotating shaft. While it is often thought that magnetic bearings are highly nonlinear devices, this paper demonstrates that they are linear in both the perturbation flux and current when used in a double acting configuration. Electronic feedback controls are used to stabilize the bearing. Example design parameters are presented for an application to an industrial canned motor pump.

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/119/1/168/5889299/168_1.pdf

Reference10 articles.

1. Allaire, P. E., Humphris, R. R., and Lewis, D. W., “Professor Jesse W. Beams and The First Practical Magnetic Suspension,” Proc. International Symposium on Magnetic Suspension Technology, NASA Conference Publication 3152, Langley Research Center, Aug. 19–23, 1991.

2. Allaire, P., Imlach, J., McDonald, J., Humphris, R., Lewis, D., Banerjee, B., Blair, B., Claydon, J., and Flack, R., “Design, Construction and Test of a Magnetic Bearing in an Industrial Canned Motor Pump,” Proc. Texas A&M Pump Symposium, Houston, TX, May 1989.

3. Imlach, J., Humphris, R., Blair, B., Allaire, P., and Lewis, D., “Testing of a Magnetic Bearing Equipped Canned Motor Pump for Installation in the Field,” Proc. Second International Symposium on Magnetic Bearings, Tokyo, Japan, July 1990, pp. 39–46.

4. Imlach J. , BlairB. J., and AllaireP. E., “Measured and Predicted Force and Stiffness Characteristics of Industrial Magnetic Bearings,” ASME Journal of Tribology, Vol. 113, Oct. 1991, pp. 784–788.

5. Cooper, P., et al., “A Boiler Feed Pump Employing Active Magnetic Bearings,” in: Advances in Steam Turbine Technology for Power Generation, ASME, Oct. 1990, pp. 203–209.

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