Journal
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Volume 31, Issue 8, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2021.3094435
Keywords
HTS tape; resistance performance; circuit analysis,joint; soldered-stacked wire; tape arrangements
Funding
- National Nature Science Foundation of China [52077134]
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This study focuses on numerically investigating the performance of different types of encapsulated joints, categorizing them into two types and utilizing a nonlinear circuit model for analysis and experiments to determine parameters. Discussions on resistance performances of the encapsulated joints and HTS tape arrangements are conducted to achieve minimum resistances.
Combining several high temperature superconducting (HTS) tapes into an assembled HTS conductor can enhance the current-carrying capacity, mechanical strength and improve the large width-to-thickness ratio of HTS tapes. And in practical applications, joints can extend the assembled HTS conductors to required lengths. Therefore, encapsulated joints for Soldered-stacked (SS) wire has been proposed as a preliminary study to achieve long length Soldered-Stacked-Square (3S) wire. And in this paper, we numerically study the performances of different types of encapsulated joints. Firstly, encapsulated joints are divided into two categories according to their positions, and a nonlinear circuit model is presented to demonstrate the numerical study process and experiments are conducted to determine the parameters in this model. Then, resistance performances of the encapsulated joints are discussed such as the multilinear resistance phenomenon where the encapsulated joints show different resistance under different current. AndHTS tape arrangements in the encapsulated joint are also discussed to achieve minimum resistances.
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