Critical Current of a Quasi-Isotropic HTS Strand in Magnetic Field
High-current high-temperature superconducting (HTS) cables made from HTS CCs have widely potential applications in high magnetic field and superconducting power devices. In this paper, a design of quasi-isotropic HTS strand made from REBCO coated conductors (REBCO CCs) with geometrical symmetric configuration was put forward and a sample of the strand was fabricated. It mainly consists of 72 REBCO CCs, metal filler, and sheath. In order to study the anisotropy of critical current, the magnetic field distribution on the cross-section of the strand was simulated and the critical current of the strand in the self-field and in an external magnetic field were calculated by finite element method. The experimental results show the validity of the simulation model and the calculation method.