Feasibility study on a new three-phase power transmission cable with radial arrangement of superconducting tapes

摘要

A new type of superconducting power transmission cable is proposed to fulfill both the conditions of low AC loss and rare leakage magnetic flux. A lot of superconducting tapes are arranged radially, and three-phase currents are applied one by another in the azimuthal direction. If the number of tapes is a multiple of three, the leakage flux can become very small. The AC loss in the superconducting tapes can also be suppressed because of the reduction of a magnetic field applied perpendicular to the tape face with increasing the number of tapes. The numerical estimation of AC losses in the proposed power cables is carried out by means of a finite element method as well as those in the conventional types of cables. (c) 2006 Elsevier B.V. All rights reserved.