Magnetic bearings have relatively low power consumption compared to fluid film and rolling element bearings. They are now candidates for supporting gas turbines and aeropropulsion engines. This paper describes the design and construction of permanent magnet biased, actively controlled magnetic bearings for a flexible rotor. The rotor was originally supported in fluid film bearings consuming as much as 3000 watts of power. For the magnetic bearing, both permanent magnets and electromagnets are used in a configuration which effectively provides the necessary fluxes in the appropriate air gaps to support the rotor. The theoretical development related to the bearing design is presented along with some experimental performance results. The results include measurements of power consumption, load capacity, bearing linearized coefficients, and the dynamic response of the rotor. The measured total power consumption, excluding shaft losses, was 210 watts in the permanent magnet biased bearing.
Skip Nav Destination
Article navigation
October 1996
Research Papers
Magnetic Bearing Design for Reduced Power Consumption
E. H. Maslen,
E. H. Maslen
Mechanical, Aerospace and Nuclear Engineering Department, University of Virginia, Charlottesville, VA 22903
Search for other works by this author on:
P. E. Allaire,
P. E. Allaire
Mechanical, Aerospace and Nuclear Engineering Department, University of Virginia, Charlottesville, VA 22903
Search for other works by this author on:
M. D. Noh,
M. D. Noh
Mechanical, Aerospace and Nuclear Engineering Department, University of Virginia, Charlottesville, VA 22903
Search for other works by this author on:
C. K. Sortore
C. K. Sortore
Mechanical, Aerospace and Nuclear Engineering Department, University of Virginia, Charlottesville, VA 22903
Search for other works by this author on:
E. H. Maslen
Mechanical, Aerospace and Nuclear Engineering Department, University of Virginia, Charlottesville, VA 22903
P. E. Allaire
Mechanical, Aerospace and Nuclear Engineering Department, University of Virginia, Charlottesville, VA 22903
M. D. Noh
Mechanical, Aerospace and Nuclear Engineering Department, University of Virginia, Charlottesville, VA 22903
C. K. Sortore
Mechanical, Aerospace and Nuclear Engineering Department, University of Virginia, Charlottesville, VA 22903
J. Tribol. Oct 1996, 118(4): 839-846 (8 pages)
Published Online: October 1, 1996
Article history
Received:
June 11, 1993
Revised:
December 14, 1995
Online:
January 24, 2008
Citation
Maslen, E. H., Allaire, P. E., Noh, M. D., and Sortore, C. K. (October 1, 1996). "Magnetic Bearing Design for Reduced Power Consumption." ASME. J. Tribol. October 1996; 118(4): 839–846. https://doi.org/10.1115/1.2831617
Download citation file:
Get Email Alerts
Related Articles
Feasibility Analysis for the Rotordynamic Performance of API617
J. Eng. Gas Turbines Power (April,2005)
Single Plane Radial, Magnetic Bearings Biased With Poles Containing Permanent Magnets
J. Mech. Des (March,2003)
Erratum: “Load–Displacement Relationship of a Ball Bearing With Axial, Radial, and Angular Displacements for Both the Inner and Outer Rings” [ASME J. Tribol., 2016, 139(1), p. 011103; DOI: 10.1115/1.4033136]
J. Tribol (September,2017)
Experimental Study on Ball Screw Type Magnetic Friction Damper: Semiactive Control Using Electromagnet
J. Pressure Vessel Technol (February,2004)
Related Chapters
Average Shaft Centerline Plots
Fundamentals of Rotating Machinery Diagnostics
Introduction
Design of Mechanical Bearings in Cardiac Assist Devices
Concluding Remarks
Design of Mechanical Bearings in Cardiac Assist Devices