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Superconducting electromechanical rotating device having a liquid-cooled, potted, one layer stator winding

United States Patent

November 6, 2001
View the Complete Patent at the US Patent & Trademark Office
A superconducting electromechanical rotating (SER) device, such as a synchronous AC motor, includes a superconducting field winding and a one-layer stator winding that may be water-cooled. The stator winding is potted to a support such as the inner radial surface of a support structure and, accordingly, lacks hangers or other mechanical fasteners that otherwise would complicate stator assembly and require the provision of an unnecessarily large gap between adjacent stator coil sections. The one-layer winding topology, resulting in the number of coils being equal to half the number of slots or other mounting locations on the support structure, allows one to minimize or eliminate the gap between the inner radial ends of adjacent straight sections of the stator coilswhile maintaining the gap between the coil knuckles equal to at least the coil width, providing sufficient room for electrical and cooling element configurations and connections. The stator winding may be potted to the support structure or other support, for example, by a one-step VPI process relying on saturation of an absorbent material to fill large gaps in the stator winding or by a two-step process in which small gaps are first filled via a VPI or similar operation and larger gaps are then filled via an operation that utilizes the stator as a portion of an on-site mold.
Dombrovski; Viatcheslav V. (Willoughby Hills, OH), Driscoll; David I. (South Euclid, OH), Shovkhet; Boris A. (Beachwood, OH)
Reliance Electric Technologies, LLC (Thousand Oaks, CA)
09/ 408,614
September 30, 1999
GOVERNMENT LICENSE RIGHTS The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Contract Number DE-FC02-93CH10580, awarded by the Department of Energy.