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Voltage–current property of two HTS tapes connected by ordinary Sn–Pb solder

Physica C Superconductivity
Publication Date
DOI: 10.1016/j.physc.2005.03.073
  • Sn–Pb Solder
  • Shake Hand
  • Pray Hand
  • Joint


Abstract The V– I property of two HTS tapes connected by ordinary Sn–Pb solder has been studied both numerically and experimentally. Two basic joint structures: “shake hand” and “pray hand” with different overlapped length are studied. By means of a Finite Element Analysis package ANSYS, not only the entire V– I curve from 0 to 2 I c can be obtained but also the detail of current distribution along the HTS tape can be simulated. The numerical approach is based on a 2D electric field analysis, where the conductivity of the HTS material is simulated in terms of a power law E– J relation. The simulated results are compared with the experimental data obtained from the commonly used four-probe method. We found that from the energy dissipation point of view, the “pray hand” structure is more appropriate for use in the high current region.

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