Fail Safe, High Temperature Magnetic Bearings Conference Paper uri icon


  • This paper contributes to the magnetic bearing literature in two distinct areas: high temperature and redundant actuation. Design considerations and test results are given for the first published combined 538°C (1000°F)-high speed rotating test performance of a magnetic bearing. Secondly, a significant extension of the flux isolation based, redundant actuator control algorithm is proposed to eliminate the prior deficiency of changing position stiffness after failure. The benefit of the novel extension was not experimentally demonstrated due to a high active stiffness requirement. In addition, test results are given for actuator failure tests at 399°C (750°F), 12,500rpm. Finally, simulation results are presented confirming the experimental data and validating the redundant control algorithm.

author list (cited authors)

  • Minihan, T., Palazzolo, A., Kim, Y., Lei, S., Kenny, A., Na, U. J., ... Kascak, A.

citation count

  • 1

publication date

  • January 2002