Superconducting cable and method of analyzing the same

A superconducting cable comprising:

• a core material;
• at least one conductor layer including superconducting wires helically wound around the core material;
• an electrically insulating layer formed on the conductor layer;
• and
• at least one magnetic shielding layer including superconducting wires helically wound around the electrically insulating layer,
• wherein the superconducting wire of an outermost conductor layer is wound at the shortest pitch and the superconducting wire of an outermost magnetic shielding layer is wound at the longest pitch.

A method of analyzing a current distribution within a superconducting cable including a core material, at least one conductor layer including superconducting wires helically wound around the core material, and electrically insulating layers formed on the conductor layer, the method comprising:

• (1) modeling the core material and the conductor layer as a circuit including at least an induced reactance;
• (2) inputting parameters including specifications of the core material including a size and a specific resistance thereof, specifications of the superconducting wires, specifications of the conductor layer including a winding direction and a pitch at which the superconducting wires are to be helically wound, a thickness and an outer diameter of the conductor layer, and the number of the conductor layer, and a frequency and an electric current to be supplied;
• (3) computing an inductance and an effective resistance of the circuit on the based on thus inputted parameters;
• and
• (4) preparing a circuit formula on the basis of the circuit and computing a current distribution of each of layers.