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:
Jul. 03, 2012
Filed:
Aug. 16, 2007
Vijay K. Maddali, Rockford, IL (US);
Gregory I. Rozman, Rockford, IL (US);
Kevin Dooley, Mississauga, CA;
Vijay K. Maddali, Rockford, IL (US);
Gregory I. Rozman, Rockford, IL (US);
Kevin Dooley, Mississauga, CA;
Pratt & Whitney Canada Corp., Quebec, CA;
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Abstract
An aircraft electrical system comprises a generator to be driven as part of a gas turbine engine. The generator supplies electrical power to a plurality of accessories associated with the gas turbine engine, and to an aircraft power bus in parallel to the supply to the accessories. A control detects a short circuit on the aircraft power bus. When a short circuit is detected on the aircraft power bus, a switch is driven open to disconnect the aircraft power bus from the generator. In this manner, the power will continue to be delivered to the plurality of accessories. In a separate feature, a control voltage is provided by an auxiliary permanent magnet generator to a voltage regulator for the main generator.