TY - JOUR
T1 - AC loss evaluation of MgB 2 superconducting windings located in a stator core slot with a finite-element method
AU - Kajikawa, Kazuhiro
AU - Osaka, Ryota
AU - Nakamura, Taketsune
AU - Sugano, Michinaka
AU - Wakuda, Tsuyoshi
N1 - Funding Information:
Acknowledgements This work was supported by the Industrial Technology Research Grant Program in 2008 (08B38006a) from the New Energy and Industrial Technology Development Organization (NEDO) of Japan.
PY - 2011/1
Y1 - 2011/1
N2 - AC losses in stator windings of fully superconducting motors with an MgB 2 wire are numerically evaluated by means of a finite-element method using edge elements for a self-magnetic field. The physical properties of the MgB 2 wire for numerical calculations are obtained from the corresponding experiments with an existing wire. It is assumed that the voltage-current characteristics of the MgB 2 wire are given by Bean's critical-state model, in which the critical current density is independent of the local magnetic field. The influences of core slot size and turn number of windings on the AC losses are discussed quantitatively toward the optimum design of the stator winding with the MgB2 wire.
AB - AC losses in stator windings of fully superconducting motors with an MgB 2 wire are numerically evaluated by means of a finite-element method using edge elements for a self-magnetic field. The physical properties of the MgB 2 wire for numerical calculations are obtained from the corresponding experiments with an existing wire. It is assumed that the voltage-current characteristics of the MgB 2 wire are given by Bean's critical-state model, in which the critical current density is independent of the local magnetic field. The influences of core slot size and turn number of windings on the AC losses are discussed quantitatively toward the optimum design of the stator winding with the MgB2 wire.
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U2 - 10.1007/s10948-010-0870-1
DO - 10.1007/s10948-010-0870-1
M3 - Article
AN - SCOPUS:80052183025
SN - 1557-1939
VL - 24
SP - 987
EP - 991
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
IS - 1-2
ER -