The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2004
Filed:
Nov. 04, 2002
Swarn S. Kalsi, Shrewsbury, MA (US);
American Superconductor Corporation, Westborough, MA (US);
Abstract
An exciter assembly for supplying power to a superconducting load, such as a superconducting field coil, disposed within a cryogenic region of a rotating machine. The exciter assembly provides an efficient and reliable approach for transferring the electrical power energy across a rotating interface. The exciter assembly includes a transformer having a primary winding and a secondary winding, and a rotatable enclosure including a wall having an intermediate core formed of a high permeability material. The intermediate core is positioned between the primary of a transformer and the secondary of the transformer. In essence, the intermediate core acts as a flux “window” or “shunt” between the primary winding and the secondary winding. One of the primary and secondary windings is generally positioned in a rotational reference frame relative to the other of the primary and secondary windings.