As we stack HTS tapes, the critical current of stacked tapes is much less than the total summation of the critical current of each tape. This is mainly due to self magnetic field effects, and its behavior has been analyzed by load line or numerical methods with some assumptions. In this paper, we propose a simple numerical model to calculate the critical current of stacked tapes more exactly. To do this, we measured Jc-B curves of a HTS tape for various values of external magnetic fields and the angles between the magnetic field and the tape surface. Using this experimental data, the current density distribution in the cross section of stacked tapes is calculated numerically and the results are compared to both experimental values and the ones from load line analysis method, calculated simply by assuming uniform current density across the tapes.
|Number of pages||4|
|Journal||IEEE Transactions on Applied Superconductivity|
|Issue number||1 III|
|Publication status||Published - 1 Mar 2001|
|MoE publication type||A4 Article in a conference publication|
|Event||2000 Applied Superconductivity Conference - Virginia Beach, VA, United States|
Duration: 17 Sept 2000 → 22 Sept 2000