结构参数对YBCO高温超导螺线管磁体临界电流密度的影响

Influence of structure parameters on the critical current density of HTS YBCO tape solenoid magnet

高温超导带材具有很强的电磁各向异性,是超导螺线管线圈在设计、优化及运行中必须考虑的重要因素。该文通过对SCS4050型YBCO高温超导带材的实验参数进行分析,得出不同背景场下带材临界电流密度的变化曲线;通过有限元仿真软件Ansoft Maxwell,分析了带材结构参数变化时,对螺线管磁体最大磁场、临界电流密度以及储能的影响。研究结果得出随结构参数变化磁体临界电流密度的变化趋势以及影响YBCO磁体临界电流密度的主要磁场角度,为Y系高温超导螺线管型磁体的设计提供一定的理论依据。

High temperature superconducting tapes have a strong electromagnetic anisotropy, which is an important factor to be considered in the design, optimization and operation of superconducting devices. Through analyzing the experimental parame- ters of the SCS4050 of YBCO high temperature superconducting tapes, the critical current density curve in different background field was obtained. Through the finite element simulation software Ansoft Maxwell, the influence of structural parameter change on the maximum solenoid field, the critical current density and the energy storage was analysed. The change trend of the critical current density with structural parameters was obtained, the main magnet field angle to affect YBCO critical current density was also obtained.