Hybrid superconducting motor/generator
AssigneeReliance Electric Technologies, LLC
InventorsViatcheslav V. Dombrovski, David I. Driscoll, Ira B. Goldberg
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Abstract
A high temperature superconductor (HTS) synchronous motor or generator includes permanent magnets disposed in the rotor. The permanent magnets can be magnetized after the rotor assembly is manufactured. The permanent magnets reduce flux density perpendicular to the superconducting coil. The magnets can be disposed in the d-axis of the motor. The motor is particularly useful in propulsion applications.
Claims20
An electromotive device, comprising:
- a stator;
- and
- a rotor, the rotor including at least one superconducting winding and at least one permanent magnet, wherein the rotor includes a central axis, the rotor rotating about the central axis, the superconducting winding having a circumference wherein the circumference contains the permanent magnet or a radial segment extending from the central axis through the circumference intersects the permanent magnet.
A rotor assembly for a synchronous electromechanical machine, the rotor assembly comprising:
- a superconducting coil;
- and
- a permanent magnet, wherein the permanent magnet is disposed so that a cross-sectional plane of the rotor assembly intersects the permanent magnet and the superconducting coil, wherein the cross-sectional plane is perpendicular to a central axis of the rotor assembly, the rotor assembly configured to rotate about the central axis, wherein the superconducting coil is further from the central axis than the permanent magnet or surrounds the permanent magnet.
A method of operating a rotating electromechanical device, the method comprising:
- providing a stator field with a stator having a plurality of poles;
- and
- providing a rotor field with a rotor, the rotor having at least one permanent magnet and at least one superconducting coil, wherein the permanent magnet either is at least partially located within a cylindrical boundary defined by the superconducting coil and within a same quadrature portion of the rotor or is at least partially located between the superconducting coil and a central axis.
Dependencies are inferred from the claim text.