A measurement of rotation loss characteristics of high-Tc superconducting magnetic bearings and active magnetic bearings

As the demand for electric power has been increasing steadily, the introduction of a flywheel energy storage system (FESS) using a superconducting magnetic bearing (SMB) is needed to level daily load as much as possible (daily load-leveling). We have studied rotation loss characteristics of SMBs wit...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1999-06, Vol.9 (2), p.972-975
Main Authors: Kameno, H., Miyagawa, Y., Takahata, R., Ueyama, H.
Format: Article
Language:English
Subjects:
Applied sciences
BEARINGS
Bearings, bushings, rolling bearings
Condensed matter: electronic structure, electrical, magnetic, and optical properties
COPPER OXIDE
Cuprates superconductors (high tc and insulating parent compounds)
Drives
Electrical engineering. Electrical power engineering
Electromagnets
Energy storage
Exact sciences and technology
Flywheels
High temperature superconductors
Loss measurement
Magnetic bearings
Magnetic levitation
MAGNETS
Marketing
MARKETS
MEASUREMENT
Mechanical engineering. Machine design
Permanent magnets
Physics
Rotation measurement
ROTORS
STORAGE
Superconducting magnets
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Testing
Various equipment and components
YBCO superconductors
Yttrium barium copper oxide
YTTRIUM OXIDE
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Summary:As the demand for electric power has been increasing steadily, the introduction of a flywheel energy storage system (FESS) using a superconducting magnetic bearing (SMB) is needed to level daily load as much as possible (daily load-leveling). We have studied rotation loss characteristics of SMBs with high Tc superconductors (YBCO) and permanent magnets (PM) for supporting a flywheel in FESS. We have designed and manufactured a testing machine for measuring rotation loss characteristics of SMBs. The rotor is suspended by two sets of radial active magnetic bearings (RaAMBs), a set of axial active magnetic bearings (AxAMB) and a set of SMB. Then, we obtained rotation loss characteristics of the rotor levitated by RaAMBs, AxAMB and SMB on this testing machine.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.783460