THE CURRENT DISTRIBUTION IN SUPERCONDUCTING CABLE CONDUCTORS WITH NON-INSULATED STRANDS

From the viewpoint of the current distribution at the steady state in the superconducting cable, we investigate the inter-strand coupling, w hich affects the fundamental properties of the conductor such as ac lo ss and current distribution. To begin with, we introduce an approximat e analytical expression for uniforming of the current distribution in the superconducting cable. Next, we examine the dependence of the chan ge of the current distribution on the main factors of the inter-strand coupling such as the inter-strand contact resistance and the structur e of the conductor. Then, we obtain the useful information of the cond uctor design so as to uniform the transport current distribution. It i s also shown that the intensity of the inter-strand coupling is estima ted by measuring the change of the current distribution.