Abstract
This paper studies the thermal stability of BSCCO (Bi-2223) /REBCO hybrid tapes with different stacking methods under various operating currents in liquid nitrogen (LN <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) bath. The thermal stability of single REBCO tape and BSCCO tape are also studied as the comparison. A 3D numerical model considering the anisotropic thermal conductivity is established to calculate the normal zone propagation velocity (NZPV) and minimum quench energy (MQE) of different hybrid tapes, and the temperature distributions of the tapes are obtained as well. The experiments of thermal stability of single tape and RB hybrid tape are also carried out. Results show the hybrid tape has better thermal stability than the REBCO tape and faster NZPV than the BSCCO tape.
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