TY - JOUR
T1 - Construction of the stator installed in the superconducting magnetic bearing for a 10 kWh flywheel
AU - Koshizuka, N.
AU - Matsunaga, K.
AU - Yamachi, N.
AU - Kawaji, A.
AU - Hirabayashi, H.
AU - Murakami, M.
AU - Tomita, M.
AU - Une, S.
AU - Saito, S.
AU - Isono, M.
AU - Nasu, H.
AU - Maeda, T.
AU - Ishikawa, F.
N1 - Funding Information:
This work is supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Superconducting Bearing Technologies for Flywheel Energy Storage System.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/10
Y1 - 2004/10
N2 - 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.
AB - 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.
KW - Flywheel energy storage system
KW - Levitation force
KW - Rotation loss
KW - Superconducting magnetic bearing
KW - Superconducting stator
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U2 - 10.1016/j.physc.2004.01.100
DO - 10.1016/j.physc.2004.01.100
M3 - Article
AN - SCOPUS:4644338729
SN - 0921-4534
VL - 412-414
SP - 756
EP - 760
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SPEC. ISS.
ER -