首页> 外文期刊>Journal of Advanced Science >TFA-MOD法YBCO超伝導テープ線材を用いた2 kA級電流リードユニットの開発
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TFA-MOD法YBCO超伝導テープ線材を用いた2 kA級電流リードユニットの開発

机译:使用TFA-MOD方法开发2 kA级电流引线单元YBCO超导带状导线

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High temperature superconducting current leads have been prepared by the TFA-MOD processed YBCO tapes. The YBCO tape is 5 mm in width, 190 mm in length and about 130 μm in overall thickness. The YBCO superconducting layer with 1.5 μm in thickness is formed on oxide buffer layers on Hastelloy substrate tape. Transport current is supplied through Ag layer deposited on YBCO layers. A current lead unit is composed of twenty YBCO tapes soldered to Cu caps at both of ends and a GFRP board. The twenty tapes are arrayed in five rows of stacked four tapes in parallel. The transport current of ten current lead units ranges from 1.5 kA to 2.5 kA at 77 K. The heat leakage of the current lead unit with 150 mm in length between 77 K and 4.2 K is estimated to be 281 mW. Therefore, the heat load at 2 kA corresponds to 140 mW/kA, which is around one order of magnitude smaller than that of conventional current lead. The small heat leakage results from high current performance and low thermal conductivity in the present HTS current lead.
机译:通过TFA-MOD处理的YBCO胶带已经制备了高温超导电流引线。 YBCO胶带的宽度为5毫米,长度为190毫米,总厚度约为130微米。在哈氏合金基底带上的氧化物缓冲层上形成厚度为1.5μm的YBCO超导层。传输电流通过沉积在YBCO层上的Ag层提供。电流引线单元由20条YBCO胶带和GFRP板组成,这些胶带焊接在两端的Cu帽上。二十个磁带平行排列成五行,每行堆叠四个磁带。十个电流引线单元在77 K时的传输电流范围为1.5 kA至2.5 kA。长度为150 mm的电流引线单元在77 K和4.2 K之间的热泄漏估计为281 mW。因此,2 kA时的热负荷相当于140 mW / kA,比常规电流引线小约一个数量级。当前的HTS电流引线中的高电流性能和低热导率导致了小的热泄漏。

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