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. 31, 2020
Filed:
Dec. 12, 2014
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventors:
Andrea Mannuccini, Locarno, CH;
Silvio Colombi, Losone, CH;
Assignee:
ABB SCHWEIZ AG, Baden, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 9/02 (2006.01); H02J 9/06 (2006.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
H02H 9/02 (2013.01); H02J 9/062 (2013.01); H02M 1/32 (2013.01);
Abstract
A system is provided. The system includes a plurality of uninterruptible power supplies (UPSs), each UPS of the plurality of UPSs including an inverter, a ring bus, and at least one controller communicatively coupled to the plurality of UPSs, the at least one controller configured to determine when a bridge current in at least one UPS of the plurality of UPSs reaches a predetermined bridge current limit, and modify, in response to the determination, a capacitor voltage in the inverter of the at least one UPS to reduce a DC fault current component of a load current in the inverter.