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:
Dec. 09, 2014
Filed:
Dec. 02, 2011
Applicants:
Beat Buchmann, Nussbaumen, CH;
Beat Ronner, Birr, CH;
Inventors:
Beat Buchmann, Nussbaumen, CH;
Beat Ronner, Birr, CH;
Assignee:
ABB Technology AG, Zürich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/40 (2007.01); H02H 7/04 (2006.01); H02M 7/5387 (2007.01);
U.S. Cl.
CPC ...
H02M 7/53871 (2013.01); H02M 1/40 (2013.01);
Abstract
A method for operating a converter circuit is provided. The converter circuit includes a converter unit and a transformer. The transformer includes at least one winding set with a primary winding and a secondary winding. The converter unit is connected, on the AC voltage side, to the primary winding of the respective winding set. In order to compensate for undesirable saturation of the transformer, the converter unit is used to deliberately apply a DC voltage to the primary winding of the respective winding set of the transformer.