Nb_3Sn CICC交流损耗及分流温度计算与分析

The calculation and analysis of AC loss and current sharing temperature for Nb_3Sn-based cable-in-conduit conductor

由于应变对Nb3Sn CICC(Cable-in-Conduit Conductor)交流损耗和稳定性有重要影响,中文基于Godeke-Ilyin定标法则首先求得Nb3Sn导体的临界电流密度,以此为基础计算分析了交流损耗,并讨论了电磁循环对交流损耗的影响;此外基于Godeke-Ilyin定标法则与分流温度的试验结果,拟合出分流温度与轴向应变的关系式,这为分析应变对Nb3Sn CICC分流温度的影响提供了一种思路。

The strain has an important influence on the AC Loss and stability of Nb3Sn CICC（ Cable- in- Conduit Conduc- tor）, so in this paper we firstly calculated the critical current density of Nb3Sn CICC based on the Godeke -Ⅱylin scaling law. Then we analyzed the AC losses and discussed the influence of electromagnetic cycle on the AC Loss. Besides, we simulated the relationships between the axial strain and current sharing temperature on the basis of Godeke - Ⅱylin scaling law and the test re- suits of current sharing temperature, which provides a new idea for the analysis of the influence of strain on the current sharing temperature.