Optimum Reduction of Self Field Effects in a Bi-2223 Stacked Super Conducting Bus Bar

다국어 초록 (Multilingual Abstract)

High Tc Superconductors. such as Bi-2223, have been promising candidates far an eleclrical bus bar because bus bar has relatively low self magnetic field. It has been found that the critical current of Bi-2223 stacked tapes is much less than the total summation of critical currents of each tape, which in mainly attributed to the self magnetic fields. Furthemore, since the critical current degradation of Bi-2223 tape is greater in the normal magnetic field (to the tape surface) than in the parallel one, detailed magnetic field configuration are required to reduce the self field effects. Conceptually by rearranging each stacked tape properly, the self field effects could be minimized In this paper, we calculate the self field effects of stacked conductor defining self field factors of normal and parallel magnetic fields to the tape surface. And we propose an optimum shape of octagonal structured bus bar which has minimum self field effects.

목차 (Table of Contents)

• Abstract
• Ⅰ. INTRODUCTION
• Ⅱ. SELF FIELD OF A RECTANGULAR CONDUCTOR
• Ⅲ. CRITICAL CURRENT DEGRADATION OF STACKED CONDUCTOR
• Ⅳ. OCTAGONAL BUS BAR
• Ⅴ. CONCLUSION
• REFERENCE