Numerical study of AC loss of two-layer HTS power transmission cables composed of coated conductors with a ferromagnetic substrate

Authors : ŞÜKRÜ YILDIZ, FEDAİ İNANIR, AHMET ÇİÇEK, FEDOR GÖMÖRY

Pages : 3528-3539

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This work includes the simulation of hysteretic AC losses in two-layer HTS power transmission cables made of second-generation high-temperature superconducting tapes with a ferromagnetic substrate subject to an oscillating AC transport current, calling upon the COMSOL Multiphysics finite-element software program and exploiting an AC/DC module. How the AC transport loss is influenced by the arrangement of tapes, as well as the optimized design of superconducting power cables based on YBCO-coated conductors, are investigated. According to the radial arrangement of the tapes, four different orientations of ferromagnetic substrate are considered: 1); out-in insert ignore into journalissuearticles values(substrate of inner/outer layer facing outward/inward);, 2); in-out insert ignore into journalissuearticles values(substrate of inner/outer layer facing inward/outward);, 3); in-in insert ignore into journalissuearticles values(substrates of both inner and outer layers facing inward);, and 4); out-out insert ignore into journalissuearticles values(substrates of both inner and outer layers facing outward);. We found that the AC loss of the superconducting layer for the out-in arrangement is the lowest. We also compare our calculations with experimental results.
Keywords : High temperature superconductors, AC loss, power cable design, finite element method