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.
Claims25
A rotating machine comprising:
- a static support member;
- a direct current field excitation winding mounted on the static support member;
- an alternating current armature winding magnetically coupled to the excitation winding and mounted on the static support member, at least one of the excitation winding and armature including a superconducting material;
- a core member having a longitudinal axis and disposed adjacent to the excitation winding and armature winding, the core member being formed of a magnetic permeable material and rotatable about the longitudinal axis and around the static support member;
- and
- a refrigerator unit which cryogenically cools the at least one of the excitation winding and armature including the superconducting material.
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 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 phase winding groups;
- a core member having a longitudinal axis, the core member disposed adjacent to the field excitation sources and armature windings, the core member being formed of a magnetic permeable material and rotatable about the longitudinal axis and around the static support member;
- and
- a refrigerator unit which cryogenically cools at least one of the excitation source groups and armature windings.
Dependencies are inferred from the claim text.