Non-uniform ramping losses and thermal optimization with turn-to-turn resistivity grading in a (RE)Ba2Cu3Ox magnet consisting of multiple no-insulation pancake coils
Non-uniform ramping losses and thermal optimization with turn-to-turn resistivity grading in a (RE)Ba2Cu3Ox magnet consisting of multiple no-insulation pancake coils
复制标题
DOI：
10.1063/1.4997738
复制
发表时间：
2017-08
影响因子：
3.2
通讯作者：
Yawei Wang;Min Zhang;W. Yuan;Z. Hong;Zhijian Jin;Honghai Song
中科院分区：
文献类型：
--
作者：
Yawei Wang;Min Zhang;W. Yuan;Z. Hong;Zhijian Jin;Honghai Song
本文研究了由多个无绝缘（NI） （RE）Ba2Cu3Ox线圈组成的高温超导体（HTS）磁体的斜坡损耗。（RE）Ba2Cu3Ox （REBCO）导体是第二代高温超导薄带，RE代表稀土。在NI高温超导磁体的斜坡运行过程中，在匝间电阻和超导层内部都会产生损耗。前者带有径向电流，称为“匝间损耗”；后者是由磁流变和跳变引起的，称为“磁化损失”。在前面的文章中，我们对NI单薄煎饼线圈的斜坡损耗进行了模拟和实验研究。在由多个NI线圈组成的高温超导磁体中，线圈之间的电磁耦合对斜坡损耗的分布有很大的影响。在这里，实验验证的模型被用于研究由14个单煎饼REBCO线圈组成的高温超导磁体。结果表明，在不同的工况下，
This paper presents a study on the ramping losses of a high temperature superconductor (HTS) magnet consisting of multiple no-insulation (NI) (RE)Ba2Cu3Ox coils. The (RE)Ba2Cu3Ox (REBCO) conductor is the second generation HTS thin tape, where RE stands for rare-earth. During a ramping operation of the NI HTS magnet, losses are generated both across turn-to-turn resistances and inside superconducting layers. The former comes with radial current, which is called “turn-to-turn loss;” the latter one is induced by flux creep and jump, called “magnetization loss.” The modeling and experimental studies on the ramping losses have been reported on single NI pancake coils in the previous part. In a HTS magnet consisting of multiple NI coils, the electromagnetic coupling between coils has a considerable influence on the distribution of ramping losses. Here, the experimentally validated model is used to investigate a HTS magnet consisting of 14 single pancake REBCO coils. The results show that both the turn-to-turn l...