A permanent-magnet rotor for a high-temperature superconducting bearing

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.511408· OSTI ID:287702

Mulcahy, T M; Hull, J R; Uherka, K L ^[1]; Abboud, R G ^[2]; Wise, J H; Carnegie, D W ^[3]; Bakis, C E; Gabrys, C W ^[4]

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1. Argonne National Lab., IL (United States). Energy Technology Div.
2. Commonwealth Research Corp., Chicago, IL (United States)
3. UGIMAG, Valparaiso, IN (United States)
4. Pennsylvania State Univ., University Park, PA (United States)

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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 287702
• Report Number(s): CONF-950691--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 4Pt1 Vol. 32; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
DESIGN
FABRICATION
FLYWHEEL ENERGY STORAGE
FLYWHEELS
HIGH-TC SUPERCONDUCTORS
MAGNETIC BEARINGS
PERFORMANCE
PERMANENT MAGNETS
ROTORS