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Transport AC Losses in Superconducting Cylinder with Critical Current Density Distribution Along Radius

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Abstract

The AC loss per cycle per unit length of a hard superconducting cylinder has been analytically calculated from the critical state model assuming several distributions of a radius dependent critical-current density. It is shown that the critical-current density dependence significantly influences the AC loss at high currents. With the increase of the non-uniformity, the distribution of a quadratic decrease of the critical-current density from the surface inwards is the most favourable to lower the loss at any value of ac currents compared to other distributions.

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Authors and Affiliations

  1. Key Laboratory of Mechanics on Disaster and Environment in Western China and Department of Mechanics and Engineering Science, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu, 730000, China

    Yu-Feng Zhao & You-He Zhou

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  1. Yu-Feng Zhao
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  2. You-He Zhou
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Correspondence to You-He Zhou.

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Zhao, YF., Zhou, YH. Transport AC Losses in Superconducting Cylinder with Critical Current Density Distribution Along Radius. J Low Temp Phys 156, 30–37 (2009). https://doi.org/10.1007/s10909-009-9887-x

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  • DOI: https://doi.org/10.1007/s10909-009-9887-x

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