A Permanent-Magnet Rotor for a High-Temperature Superconducting Bearing

Thomas M. Mulcahy, John R. Hull, Kenneth L. Uherka, Robert G. Abboud, James H. Wise, David W. Carnegie, Charles E. Bakis, Christopher W. Gabrys

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Design, fabrication, and performance of a 0. 39-m diam. , 6. 8-kg flywheel rotor with only one bearing is discussed. To achieve low-loss energy storage, the rotor's segmented-ring permanent magnet (PM) is optimized for levitation and circumferential homogeneity. A PM figure of merit is proposed that appears to correlate with loss data. Pre compression of the PM with fiber-composite banding is necessary for practical rotor speeds.

Original languageEnglish (US)
Pages (from-to)2609-2612
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number4 PART 2
StatePublished - 1996

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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