【摘要】 Bi 2 2 1 2超导圆筒是感应屏蔽型高温超导故障电流限制器的核心部件 ,其性能直接影响着故障电流限制器的性能的优越与否 .本文详细的介绍了利用感应法测量Bi 2 2 1 2超导圆筒临界电流的原理和方法 ,并对Bi 2 2 1 2超导圆筒在感应法测量中的S N转变过程进行了研究 ,同时测出其交流损耗规律 .这些性能参数对感应屏蔽型故障电流限制器的额定工作电流、故障后的运行状况、以及损耗等的研究具有十分重要的意义 .更多还原

【Abstract】 Bi-2212 superconducting cylinders are the hard cores of the inductive high temperature superconducting fault current limiter, and the characteristics of the cylinders determines the limiter′s performance. In this paper, an inductive method is used to measure the critical current of a Bi-2212 superconducting cylinder sample. The magnetic field in bore of the superconducting cylinder was measured, which reflects the S-N conversion of the superconducting cylinders during the measurement. At the same time, the AC loss of the sample was measured under different frequencies. All these data are very important to the inductive high temperature superconducting fault current limiter during its design.更多还原