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:
Sep. 20, 2016
Filed:
Nov. 13, 2014
Applicant:
Abb Oy, Helsinki, FI;
Inventors:
Mikko Purhonen, Lappeenranta, FI;
Tero Viitanen, Helsinki, FI;
Assignee:
ABB Technology OY, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 5/458 (2006.01); H02M 7/44 (2006.01); H02M 5/45 (2006.01); H02M 7/493 (2007.01); H02J 3/38 (2006.01);
U.S. Cl.
CPC ...
H02M 7/44 (2013.01); H02M 5/4505 (2013.01); H02M 7/493 (2013.01); H02J 3/385 (2013.01); Y02E 10/58 (2013.01);
Abstract
The present disclosure discloses a method and an apparatus implementing the method for minimizing a circulating current of parallel-connected inverters. The method can include, for at least one parallel-connected inverter, measuring a common-mode voltage of the inverter, and controlling a cycle length of the switching cycle on the basis of the common-mode voltage.