| US 7,453,174 B1 | ||
| Superconducting electric motor | ||
| Swarn S. Kalsi, Shrewsbury, Mass. (US) | ||
| Assigned to American Superconductor Corporation, Devens, Mass. (US) | ||
| Filed on Aug. 10, 1999, as Appl. No. 9/371,692. | ||
| Int. Cl. H02K 9/00 (2006.01); H02K 3/46 (2006.01) | ||
| U.S. Cl. 310—52 [310/10; 310/216; 310/261] | 21 Claims |
| 1. A superconducting electric motor comprising:
a rotor assembly including:
a plurality of superconducting windings that, in operation, each generate a flux path within the rotor assembly,
a laminated support member that supports the superconducting windings, and
an induction structure to support induction current for driving the motor in a steady-state induction mode;
the laminated support member including laminations, a first set of laminations oriented in a first orientation and a second
set of laminations oriented in a second orientation different than the first orientation;
the rotor assembly being configured to operate
in a synchronous mode at temperatures in which the superconducting windings exhibit superconducting characteristics, and
in a steady-state induction mode at temperatures in which the superconducting windings exhibit non-superconducting characteristics.
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