Current Characteristics of Stacked HTS Conductors With Gap Optimization: Experiment and Modeling

Due to the anisotropy of high-temperature superconducting (HTS) materials, the stacked HTS conductors in a magnetic field are significantly affected, leading to a substantial reduction of critical current. In order to improve the performance of stacked conductors, we optimized the gap between these stacked tapes. First, we conducted experimental tests with four stacked tapes, and the results indicated that the critical current increased by about 5%. In order to explore the effect of the gap optimization scheme on the current distribution, we set up a model with 10 stacked conductors. Through modeling, it was found that the optimized gap scheme could improve the current distribution and increase the overall current carrying capability. This study provides a feasible optimization scheme for the design of high-current stacked HTS conductors, which can potentially enhance their performance in practical engineering.