Influence of Critical Current Density Distribution on Transport AC Losses in Superconducting Wire in a DC Magnetic Field
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In typical application-like conditions, the inhomogeneous distribution and anisotropy of critical current density must be considered simultaneously in transport AC loss calculation. In this paper, we derive the analytical formulas of transport AC losses for high-temperature superconductors (HTSs) with linear and quadratic distribution of critical current density under applied DC magnetic field. The influence of the inhomogeneous distribution and anisotropy of critical current density has been analyzed. The results show that the impact of the distribution form on transport AC loss is more obvious under applied DC magnetic field. And the influence of applied DC magnetic field will increase as the distribution form becomes steeper.
KeywordsTransport AC losses Inhomogeneous critical current density DC applied magnetic field
This work was supported by the Fund of Natural Science Foundation of China (Grant No. 11402140, No. 11404197) and Natural Science Foundation of Shanxi (Grant No. 2015021016, No. 201701D221006)
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