Construction of the stator installed in the superconducting magnetic bearing for a 10 kWh flywheel

N. Koshizuka, K. Matsunaga, N. Yamachi, A. Kawaji, H. Hirabayashi, Masato Murakami, M. Tomita, S. Une, S. Saito, M. Isono, H. Nasu, T. Maeda, F. Ishikawa

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We fabricated a superconducting magnetic bearing module consisting of a stator of epoxy resin impregnated YBaCuO bulks and a rotor of NdFeB permanent magnet circuits. We obtained levitation force density of 10.5 N/cm2 at 67 K and rotation loss per levitation force of 2.5 mW/N at 77 K. The rotation loss was reduced by the decrease of magnetic field inhomogeneity in the circular direction along the ring shape permanent magnet of the rotor. Based on these results we constructed a stator consisting of five modules and installed in the form of superconducting magnetic bearing for a 10 kWh class flywheel energy storage test system.

Original languageEnglish
Pages (from-to)756-760
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct

Fingerprint

flywheels
magnetic bearings
Magnetic bearings
Flywheels
levitation
stators
permanent magnets
Stators
Permanent magnets
rotors
Rotors
modules
Epoxy Resins
epoxy resins
energy storage
Epoxy resins
Energy storage
inhomogeneity
Magnetic fields
Networks (circuits)

Keywords

  • Flywheel energy storage system
  • Levitation force
  • Rotation loss
  • Superconducting magnetic bearing
  • Superconducting stator

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Construction of the stator installed in the superconducting magnetic bearing for a 10 kWh flywheel. / Koshizuka, N.; Matsunaga, K.; Yamachi, N.; Kawaji, A.; Hirabayashi, H.; Murakami, Masato; Tomita, M.; Une, S.; Saito, S.; Isono, M.; Nasu, H.; Maeda, T.; Ishikawa, F.

In: Physica C: Superconductivity and its Applications, Vol. 412-414, No. SPEC. ISS., 10.2004, p. 756-760.

Research output: Contribution to journalArticle

Koshizuka, N, Matsunaga, K, Yamachi, N, Kawaji, A, Hirabayashi, H, Murakami, M, Tomita, M, Une, S, Saito, S, Isono, M, Nasu, H, Maeda, T & Ishikawa, F 2004, 'Construction of the stator installed in the superconducting magnetic bearing for a 10 kWh flywheel', Physica C: Superconductivity and its Applications, vol. 412-414, no. SPEC. ISS., pp. 756-760. https://doi.org/10.1016/j.physc.2004.01.100
Koshizuka, N. ; Matsunaga, K. ; Yamachi, N. ; Kawaji, A. ; Hirabayashi, H. ; Murakami, Masato ; Tomita, M. ; Une, S. ; Saito, S. ; Isono, M. ; Nasu, H. ; Maeda, T. ; Ishikawa, F. / Construction of the stator installed in the superconducting magnetic bearing for a 10 kWh flywheel. In: Physica C: Superconductivity and its Applications. 2004 ; Vol. 412-414, No. SPEC. ISS. pp. 756-760.
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AU - Matsunaga, K.

AU - Yamachi, N.

AU - Kawaji, A.

AU - Hirabayashi, H.

AU - Murakami, Masato

AU - Tomita, M.

AU - Une, S.

AU - Saito, S.

AU - Isono, M.

AU - Nasu, H.

AU - Maeda, T.

AU - Ishikawa, F.

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