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:
Apr. 17, 2007
Filed:
Oct. 07, 2003
Applicants:
Ingemar Blidberg, Ludvika, SE;
Kjell Svensson, Ludvika, SE;
Roland Siljeström, Grängesberg, SE;
Inventors:
Assignee:
ABB AB, Västerås, SE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/5387 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a method for control of a converter for conversion of dc voltage into ac voltage or dc voltage and vice versa, in which an output of the converter may alternatively be connected to a positive pole, a negative pole or a center of a dc voltage side of the converter in the form of different so-called main states, there is carried out, when changing between main states via a so-called minor commutation loop, an extra sequence in the form of a delayed turn-on of semiconductor elements in one unit of the converter relative to semiconductor elements in another unit in a pair of units of the converter.