Rotating machine having superconducting windings
AssigneeAmerican Superconductor Corporation
InventorSwarn S. Kalsi
Life of this patent
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Abstract
A superconducting rotating machine includes a direct current field excitation source and an alternating current armature winding mounted on a stationary support member, at least one of which includes a superconducting material, a core member formed of a magnetic permeable material and rotatable around the static support member, and a refrigerator unit which cryogenically cools at least one of the field excitation source and the armature winding. The superconducting rotating machine may have a construction for providing polyphase (e.g., three-phase) power.
Claims53
A rotating machine comprising:
- a static support member;
- a direct current field excitation source mounted on the static support member, the direct current field excitation source including a high temperature superconducting material;
- an alternating current armature winding magnetically coupled to the excitation source and mounted on the static support member;
- and
- a core member disposed adjacent to and adapted to magnetically couple with the excitation source and armature winding the core member being rotatable about the excitation source and armature winding on the static support member.
A polyphase rotating machine comprising:
- a static support member;
- a plurality of direct current field excitation source groups, each mounted on the static support member and having at least a pair of field excitation sources, each field excitation source from a first one of the field excitation source groups being radially spaced from a field excitation source of a second one of the field excitation source groups, each field excitation source including a high temperature superconducting material;
- a plurality of alternating current armature windings mounted on the static support member, each winding associated with and magnetically coupled to a corresponding one of the plurality of field excitation source groups;
- and
- a core member disposed adjacent to and adapted to magnetically couple with the field excitation sources and armature windings, the core member being rotatable about the field excitation sources and armature windings on the static support member.
A method of generating electricity via a rotating motor machine, the method comprising:
- rotating a core member about a static support member including a direct current field excitation source and an alternating current armature winding magnetically coupled to the excitation source, the excitation source including a high temperature superconducting material, to produce an AC magnetic flux in the core member and an AC current in the armature winding.
A rotating machine comprising:
- a static support member;
- a direct current field excitation source mounted on the static support member, wherein the field excitation source is a saddle-shaped racetrack pancake coil;
- an alternating current armature winding magnetically coupled to the excitation source and mounted on the static support member, the excitation source including a superconducting material;
- and
- a core member disposed adjacent to and adapted to magnetically couple with the excitation source and armature winding the core member being rotatable about the excitation source and armature winding on the static support member.
A method of generating electricity via a rotating motor machine, the method comprising:
- rotating a core member about a static support member including a direct current field excitation source having a saddle-shaped racetrack pancake coil and an alternating current armature winding magnetically coupled to the excitation source, the excitation source including a superconducting material, to produce an AC magnetic flux in the core member and an AC current in the armature winding.
Dependencies are inferred from the claim text.