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

doi:10.1109/20.511408

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 journal › Article › peer-review

13 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	2609-2612
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	32
Issue number	4 PART 2
DOIs	https://doi.org/10.1109/20.511408
State	Published - 1996

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.511408

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title = "A Permanent-Magnet Rotor for a High-Temperature Superconducting Bearing",

abstract = "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.",

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

note = "Funding Information: Manuscript received June 13, 1995. Work partially supported by the U.S. Department of Energy, Energy Efficiency and Renewable Energy, as part of a program to develop electric power technology, under Contract W731- 109-Eng-38.",

year = "1996",

doi = "10.1109/20.511408",

language = "English (US)",

volume = "32",

pages = "2609--2612",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - A Permanent-Magnet Rotor for a High-Temperature Superconducting Bearing

AU - Mulcahy, Thomas M.

AU - Hull, John R.

AU - Uherka, Kenneth L.

AU - Abboud, Robert G.

AU - Wise, James H.

AU - Carnegie, David W.

AU - Bakis, Charles E.

AU - Gabrys, Christopher W.

N1 - Funding Information: Manuscript received June 13, 1995. Work partially supported by the U.S. Department of Energy, Energy Efficiency and Renewable Energy, as part of a program to develop electric power technology, under Contract W731- 109-Eng-38.

PY - 1996

Y1 - 1996

N2 - 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.

AB - 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.

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 4 PART 2

ER -

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

Abstract

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