Characteristics of Critical Current of HTS Conductor on Round Core

The bend and transposition of high-temperature superconductors (HTS) have great influence on the characteristics of critical current. For Conductor on Round Core (CORC), twist pitch and diameter will influence the characteristics of critical current. The influence of twist pitch and diameter on the critical current characteristics of CORC was studied. In this paper, the simulation of magnetic field distribution of the conductor using FEM was accomplished, and the critical current of the conductor was calculated and discussed in different twist pitch and diameter. Then, the sample of HTS CORC was fabricated, and the critical current was measured at liquid nitrogen temperature and self-field. The test results correspond with simulation.