Transient field losses in multifilamentary composite conductors carrying dc transport currents
1980; Elsevier BV; Volume: 20; Issue: 4 Linguagem: Inglês
10.1016/0011-2275(80)90130-7
ISSN1879-2235
AutoresTakeshi Ogasawara, Yuki Takahashi, K. Kanbara, Y. Kubota, K. Yasohama, K. Yasuköchi,
Tópico(s)Mechanical stress and fatigue analysis
ResumoTheoretical studies are presented for transient field losses in multifilamentary composite conductors carrying a dc transport current. The analysis of the total loss is split into separate calculations of the magnetization loss and the loss due to the dynamic resistance. Analytical expressions are derived for a field change of trapezoidal shape. The parameter which characterizes the total loss is a dimensionless sweep rate of the external field β = τḂe/Bp, where τ is the relaxation time of the eddy current and Bp is the full-penetration field of the composite conductor. Graphs for a wide range of the field change rate are given and they reveal the strong influence of the transport current.
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