Patent ID: 7915770

Claim:
In a superconducting rotating machine including a stator having a sealed structure while including a stator coil arranged in the stator, a rotor arranged in the stator while including a superconducting coil arranged around an outer peripheral surface of the rotor, a support mounted to an inner peripheral surface of the rotor while extending through the stator, a pair of current lines each connected, at one end thereof, to the superconducting coil while extending horizontally, a power slip ring connected to the other end of each current line, and mounted to an outer surface of the support within the stator, and a brush extending through the stator while being in contact with the power slip ring, a cooling device for the current lines of the superconducting rotating machine, the cooling device comprising: heat conduction members respectively mounted to outer surfaces of the current lines, each heat conduction member being in contact with an inner peripheral surface of the stator such that the heat conduction member transfers, to the stator, heat generated from a corresponding one of the current lines; and insulators each surrounding a corresponding one of the current lines between a corresponding one of the heat conduction members and the power slip ring, to thermally insulate the heat generated from the corresponding current line.