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. 11, 2001
Filed:
Aug. 11, 2000
Applicant:
Inventors:
Christoph Stemmler, Baden, CH;
Christian Stulz, Zürich, CH;
Assignee:
Asea Brown Boveri AG, Baden, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 3/00 ; H02M 5/40 ; H02M 5/45 ;
U.S. Cl.
CPC ...
H02J 3/00 ; H02M 5/40 ; H02M 5/45 ;
Abstract
A converter circuit arrangement having a DC intermediate circuit (,) includes a transformer (,) having at least two windings (,and,). This transformer (,) is connected in the intermediate circuit (,) such that the undesirable, unbalanced current components lead to magnetization of the transformer core and are thus reduced. A grounded LC filter (Lf, Cf) is connected upstream of the load (,) and produces a sinusoidal voltage across the load (,). In consequence, the circuit can be used with any desired rotating-field machines, and thus also for retrofitting existing systems.