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:
Dec. 18, 1984
Filed:
Feb. 07, 1983
Timothy F Glennon, Rockford, IL (US);
David J Hucker, Rockford, IL (US);
Charles M Lenny, Billerica, MA (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
An electrical power system has a variable speed multi-phase alternator. A multi-phase full wave rectifier with controlled rectifier elements converts the electrical power to DC. The DC voltage is regulated by a control circuit which determines the angle of conduction of the rectifier elements. If the alternator frequency is excessive, the controlled rectifier elements are not reliably commutated. The control circuit compares the alternator frequency with a reference. When the frequency is above a selected value, rectifier operation is modified either for half wave rectification or for full wave rectification of less than all of the phases from the alternator. Additional switching time is provided, improving reliability.