To provide a superconducting motor that efficiently cools a plurality of superconducting coils arranged in a plurality of circumferential positions of a stator to a desired cryogenic temperature while reducing or eliminating temperature differences.
A superconducting motor 10 includes a rotatably arranged rotor 20 and a stator 22 radially outwardly opposed to the rotor 20, and coils 36 are wound as a plurality of superconducting coils on an inner circumferential end of the stator 22, that is, one radial end. The superconducting motor 10 includes a refrigerator 14 having a plurality of capillaries 66 for conducting a low temperature refrigerant therein, and the plurality of capillaries 66 are at least partly arranged in a stator core 34. Connection portions 75, 77 at both ends of the plurality of capillaries 66, as refrigerant supply/discharge connection portions, are disposed on opposite axial sides of the stator 22 and diametrally opposite with respect to the rotational center axis of the rotor 20.
OHASHI YOSHIMASA
OKUMURA NOBUAKI
ISHIDA KENJI
AISIN SEIKI