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通过预先磁化的方法可将高温超导块材制备成块材磁体,以有效提升悬浮系统的整体工作性能.未经磁化的高温超导块材处于悬浮状态时,其内部超导电流会随时间增长出现衰退,即存在弛豫现象.预载过程是一种抑制高温超导块材内部电流弛豫的有效方法,可以保证悬浮系统工作特性的稳定.然而,当高温超导块材经历磁化后,其内部已存在磁化超导电流,该磁化超导电流与悬浮过程中产生的超导电流相互叠加,产生独特的电流分布特性及弛豫特性.本论文主要探讨预载过程对高温超导块材磁体弛豫特性的影响,通过实验测试和对比分析,揭示不同磁化状态下弛豫过程的特点,从而为高温超导块材磁体在悬浮系统中的实际工程化应用提供有效的参考依据.
The pre-magnetization method can be used to prepare high-temperature superconducting bulk materials into bulk magnets to effectively enhance the overall performance of the suspension system.Unmermalized high-temperature superconducting bulk materials in suspension, the internal superconducting current with time The premature loading process is a kind of effective method to restrain the internal current relaxation in the HTS block, which can ensure the stability of the working characteristics of the suspension system.However, when the HTS block undergoes magnetization , The magnetizing superconducting current is already existed in the magnetizing superconducting current and the superconducting current generated in the suspending process superposes to each other to generate unique current distribution and relaxation characteristics.This paper mainly discusses the effect of preloading process on the high temperature superconductor The influence of the relaxation characteristics of the magnet material on the magnetics is revealed through experimental tests and comparative analysis, which can provide an effective reference for the actual engineering application of HTS bulk magnets in the suspension system.