Patent ID: 6255595
Filing Date: 2001-07-03
Classification: H01B,Y02E,Y10S

Abstract:
A high power superconducting cable comprising:a superconducting core comprising a plurality of magnetically uncoupled conductive elements having opposing ends for connection, respectively, to a source for providing a predetermined current having at least one phase and to at least one load, wherein each of said conductive elements comprises a couple of phase and neutral conductors, wherein each of the neutral conductors is external and coaxial to a respective one of the phase conductors, wherein each of the phase and neutral conductors includes at least a layer of a superconducting material, each of said phase and neutral conductors being electrically insulated from one another by interposition of a dielectric material and each of said conductive elements being electrically insulated from one another;means for cooling said core at a temperature not higher than the critical temperature of said superconducting material; andmeans for electrically connecting, at one of the opposing ends, a predetermined number of the conductive elements to each other such that each of the predetermined number of the conductive elements carries a fraction of the predetermined current provided by the source, wherein said predetermined number is of a value such that the fraction of the predetermined current is lower than a value which determines a superficial current density in each of the predetermined number of the conductive elements corresponding to a magnetic field capable of generating a conductivity reduction in the superconducting material and wherein the superconducting material is distributed among the predetermined number of conductive elements to provide that the mean exploitation efficiency of the superconducting material is about 100%.