Rotor power losses in planar radial magnetic bearings-effects of number of stator poles, air gap thickness, and magnetic flux density

Proceedings of the ASME Turbo Expo

Volumn 5, Issue , 1998, Pages

  Allaire, P E ^a   Kasarda, M E F ^b   Fujita, L K ^a  

^a University of Virginia   (United States)

^b Virginia Polytechnic Institute and State University   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AIRCRAFT ENGINES; EDDY CURRENT TESTING; GAS TURBINES; HYSTERESIS; KINETIC ENERGY; KINETICS; MAGNETIC BEARINGS; MAGNETIC DEVICES; MAGNETIC FLUX; MAGNETISM; STATORS;

AIR GAP THICKNESS; EDDY-CURRENT EFFECTS; LAMINATED ROTORS; LOSS MECHANISMS; MAGNETIC FIELD DISTRIBUTION; MEASURED RESULTS; NUMBER OF POLES; RADIAL MAGNETIC BEARINGS;

MAGNETIC FIELD EFFECTS;

EID: 84973117932     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1115/98-GT-316     Document Type: Conference Paper

References (10)

1. Allaire, P. E., Kasarda, M. E. F., Maslen, E. H., and Gillies,G. T., 1996, "Rotor Power Loss Measurements for Heteropolar and Homopolar Magnetic Bearings," 5th Inter. Conf. on Magnetic Bearings, Kanazawa, Japan, pp. 271-276.
2. Allaire, P. E., Kasarda, M. E. F., Maslen, E. H., Gillies, G. T., and Fujita, L. K., 1997, "Flux Density and Air Gap Effects on Rotor Power Loss Measurements in Planar Radial Magnetic Bearings," Inter. Gas Turbine and Aeroengine Conference, Orlando, Florida, Paper 97-gt-17.
3. Kasarda, M. E. F., Allaire, P. E., Maslen, E. H. and Gillies, G. T., 1994, "Design of a High Speed Rotating Loss Test Rig For Radial Magnetic Bearings," Proceedings, Fourth International Symposium on Magnetic Bearings. ETH Zurich.
4. Kasarda, M.E., and Allaire, P.E., 1996a, "Experimentally Measured and Improved Calculated Losses in Planar Radial Magnetic Bearings," Accepted for STLE Transactions.
5. Kasarda, M. E. F., Allaire, P. E., Maslen, E. H., Brown, G. R., and Gillies, G. T., 1996b, "High Speed Rotor Losses in a Radial 8-Pole Magnetic Bearing, Part 1: Experimental Measurement," Paper 96-GT-470, Inter. Gas Turbine Conf., Birmingham, England.
6. Kasarda, M. E. F., Allaire, P. E., Maslen, E. H., Brown, G. R., and Gillies, G. T., 1996c, "High Speed Rotor Losses in a Radial 8-Pole Magnetic Bearing, Part 2: Analytical/Empirical Models and Calculation," Paper 96-GT-471, Inter. Gas Turbine Conf., Birmingham, England.
7. Kasarda, M. E. F., 1997, "The Measurement and Characterization of Power Losses in High Speed Magnetic Bearings," Ph. D. Thesis, university of Virginia.
8. Matsumura, F., Fujita, M., and Ozaki, Y., 1988, "Characteristics of Friction on Magnetic Bearings," Trans. IEE of Japan, 108-D, No. 5, pp 462-468.
9. Matsumura, F., and Hatake, K., 1992, "Relation between Magnetic Pole Arrangement and Magnetic Loss in Magnetic Bearing," Proc.of Third Inter. Conf. on Magnetic Bearings, Alexandria, Virginia, USA, pp. 274-283.
10. Rockwell, R. D., Allaire, P. E., Kasarda, M. E. F., 1997, "Radial Planar Magnetic Bearing Analysis with Finite Elements Including Rotor Motion and Power Losses, " ASME Paper 97-GT-503, Inter. Gas Turbine & Aeroengine Cong. & Exhib., Orlando, Florida.