具有不同扭距的堆叠扭绞型复合导体临界电流特性分析

Critical current characteristics analysis of twisted stacked-tapes cable with different twisted pitches

根据高温超导堆叠扭绞型复合导体的结构参数,研究堆叠带材根数及扭绞节距对其临界电流特性的影响。首先阐述了堆叠扭绞型复合导体的结构特点,据此设计并制作实验样品。在77K、自场下,对采用不同根数超导带材复合而成的导体样品,分别测试其在多个扭绞节距下的临界电流。通过实验测试可得,随着扭转角度的增大,导体的临界电流不断衰减,且堆叠带材的数量越多,导体的临界节距越大。

According to the structural parameters of the high temperature superconducting twisted stacked-tapes cable( TSTC),the influence of the number of stacked tapes and the twist pitch on the critical current of the conductor was studied.The structural characteristics of the TSTC were described,and experimental samples were designed and assembled. At 77 K and self-field,the samples with different numbers of superconducting tapes were tested for their critical currents at multiple twist pitches. Through the experimental test,as the twist angle increases,the critical current of the conductor continuously decreases. And the more stacked tapes,the larger critical pitch.