Estimation of AC loss in cylindrical superconductor with ripple currenｔ
Estimation of AC loss in cylindrical superconductor with ripple currenｔ
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用纹波电流估算圆柱形超导体的交流损耗
DOI：
10.1016/j.phpro.2012.03.457
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
E.S. Otabe
中科院分区：
文献类型：
--
作者：
Naoya Masuichi;Masaharu Fujii;Haruo Ihori;E.S. Otabe
基于Irie-Yamafuji模型，考虑临界电流密度与磁场的关系，从理论上计算了圆柱形超导体在波纹电流作用下的损耗能量密度(交流损耗)，用于直流输电电缆系统的设计。证实了当临界电流不依赖于磁场时，在有无直流电流的情况下，交流损耗不变，符合Bean-London模型。相反，发现存在交流损耗变小的电流区，而不存在直流电流的情况。采用薄带超导体制作的层状结构直流输电电缆，其交流纹波电流损耗似乎足够小。
The loss energy density (AC loss) in cylindrical superconductor with ripple current based on Irie-Yamafuji model in which the magnetic fiel dependence of critical current density is taken into account is theoretically calculated for design of DC transmission cable system. It is confirme that the AC loss does not changed for the cases with and without DC current when the critical current does not depend on magnetic fiel which is corresponding to Bean-London model. On the contrary, it is found that there is current region where the AC loss becomes smaller than that for the case without DC current. The AC loss of ripple current is seems to be enough small in layered structure of DC transmission cable made by thin tape superconductor.