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:
Oct. 08, 1991
Filed:
Jan. 29, 1990
Alexander Cook, Rockford, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
An inverter control for a full-bridge inverter having a plurality of phase legs each of which includes a switch which is operated to produce one of a set of phase output voltages and wherein a neutral voltage is derived from the phase output voltages compares each phase output voltage to a reference and selects a switching pattern for each inverter switch in dependence upon the comparison wherein the selected switching pattern for two of the phases are different. The switches are controlled in accordance with the selected switching patterns whereby the amplitudes of particular harmonics in the inverter output are adjusted to in turn control the amplitude of other harmonics in the inverter output.