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:
May. 20, 2014
Filed:
Sep. 29, 2011
Frank Z. Feng, Loves Park, IL (US);
Mustansir Kheraluwala, Lake Zurich, IL (US);
Waleed M. Said, Rockford, IL (US);
John Huss, Roscoe, IL (US);
Frank Z. Feng, Loves Park, IL (US);
Mustansir Kheraluwala, Lake Zurich, IL (US);
Waleed M. Said, Rockford, IL (US);
John Huss, Roscoe, IL (US);
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Abstract
A dual-input nine-phase autotransformer converts first and second three-phase AC inputs to a nine-phase AC output. The autotransformer includes input terminals for connection to a first three-phase AC input and a second three-phase AC input smaller than the first three-phase AC input. The autotransformer includes a first plurality of coils, a second plurality, and a third plurality of coils wound on respective phase legs of the autotransformer. The autotransformer includes a plurality of output terminals for providing a plurality of AC output voltages, and a plurality of internal terminals for connecting the first, second, and third plurality of coils in a configuration that provides a 40° phase shift in the AC outputs provided by the dual-input nine-phase autotransformer.