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:
Mar. 21, 2017
Filed:
Jul. 11, 2014
The Boeing Company, Chicago, IL (US);
Jian Huang, Everett, WA (US);
Eugene V. Solodovnik, Lake Stevens, WA (US);
Kamiar J. Karimi, Kirkland, WA (US);
THE BOEING COMPANY, Chicago, IL (US);
Abstract
A multi-phase autotransformer () is disclosed. The exemplary transformer includes primary windings PWA, PWB, PWC) and secondary windings (SWA-SWA, SWB-SWB, SWC-SWC). The primary windings are connected in a delta configuration and to a three-phase input voltage source. Each secondary winding is electrically connected to a primary winding but is magnetically coupled to a different primary winding. Three sets of secondary windings provide three three-phase outputs (A,B,C), each of which has a voltage which is less than the three-phase input voltage, the three-phase output of each set being phase-shifted with respect to the other sets. These three sets also, collectively, provide a multi-phase output (). Another set of secondary windings, in conjunction with the input voltage, provides another multi-phase phase output () which has approximately the same voltage as the three-phase input voltage.