An abnormal quench process with apparent high propagation velocity of the normal zone, ·fast quench', was studied in relation to electromagnetic and thermal couplings among strands for multi-strand superconducting cables. The quench process was numerically evaluated by simultaneous equations of heat balance and equivalent electrical circuit of the multi-strand cables. Experimental results are well explained by the numerical simulation concerning threshold current of the fast quench for a two-strand cable. The quench process of a six-strand cable was also calculated numerically and the relation between the fast quench and current commutation among strands is discussed.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Physics and Astronomy(all)