过冷液氮温度下块材的悬浮特性及其仿真研究

随着温度的降低，超导块材表现出的超导特性也随之变化.本文结合现有实际应用的车载超导块材冷却方法，通过改变气压的方式营造过冷液氮温度条件，探究块材组合与Halbach轨道之间的悬浮特性.由于实验测量存在一定局限性，只能完成部分工况条件下的研究.为了更加系统全面的研究，本文对过冷状态下超导块材的悬浮特性进行仿真计算，通过与实验结果对比来确定仿真参数.结果显示，仿真计算与实验数据吻合度较高，为后期的研究工作提供了仿真工具.

Experimental and Simulation Study on Levitation Characteristics of the HTS Bulk at Super-cooling Liquid Nitrogen Temperature

With the decrease of temperature, the HTS bulk exhibits different superconducting characteristics. This article aims to use a method of taking vacuum decompression to realize the super-cooling condition and research the Levitation Characteristics between the HTS bulk array and Halbach permanent magnetic guide way (PMG) at different pressure conditions. Due to the limitations of the experimental measurement, the study can only be completed under partial working conditions by relying on the experiment. To study the levitation characteristics of superconductors systematically and comprehensively under the super-cooling state, a superconductor simulation model was established. The simulation parameters are determined by comparing them with the experimental results. The results show that the simulation results calculated by the proposed model agree with the experimental data well. The simulation model provides simulation tools for levitation force optimization.