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高温超导磁体运行过程中,磁体的热稳定性是磁体能否安全运行和实用化的重要指标。在磁体热稳定性的相关研究中,超导磁体在运行过程中的交流损耗和热传导特性是两个值得研究的问题。因此,文中运用商业有限元软件Comsol构造了YBCO高温超导体的数值仿真模型,通过Comsol中的AC/DC模块和热传导模块的相互耦合,在给予不同频率和不同幅值的交变外磁场激励下,对YBCO高温超导体在运行过程中的温升特性进行实时监测和分析,并计算出其交流损耗。为避免超导体失超,保证其安全稳定运行提供一定的指导。
High-temperature superconducting magnet operation, the thermal stability of the magnet is an important indicator of the safe operation of the magnet and practical. In the study of magnet thermal stability, AC loss and thermal conduction characteristics of superconducting magnets during operation are two issues that deserve study. Therefore, a numerical simulation model of YBCO high temperature superconductor is constructed by commercial finite element software Comsol. Excited by AC / DC module and heat conduction module in Comsol, under the excitation of alternating external magnetic field with different frequencies and different amplitudes, YBCO high temperature superconductor in the process of running temperature characteristics of real-time monitoring and analysis, and calculate the AC loss. In order to avoid superconductors quench, to ensure its safe and stable operation to provide some guidance.