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:
Jun. 02, 2009
Filed:
Nov. 05, 2007
Robert Albert Dawley, Cary, NC (US);
Robert Albert Dawley, Cary, NC (US);
Electronics Systems Protection, Inc., Zebulon, NC (US);
Abstract
A voltage sag compensation system includes a capacitor charging and discharging module connected to an AC rectifier and to an inverter, a two stage voltage detector configured to detect a degree of voltage sag that is present on a power line, and an inverter gating module selectively connectable to the power line in response to the two stage voltage detector and configured to provide gating signals to the inverter. The system further includes a low DC bus switch out module configured to monitor an output voltage of the capacitor charging and discharging module and to disable the inverter gating module from providing the gating signals to the inverter when voltage associated with the capacitor charging and discharging module falls below a predetermined value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile