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:
Jul. 20, 1999
Filed:
Nov. 07, 1997
Peter Dahler, Remingen, CH;
Asea Brown Boveri AG, Baden, CH;
Abstract
A power electronic circuit arrangement is specified, having a first power converter, which is connected to a first supply system, and a second power converter, which is connected to a second supply system. The first and second power converters are connected via a voltage intermediate circuit. According to the invention, a further filter is provided in addition to the so-called 33 Hz filter (supply-system filter) in the voltage intermediate circuit, which further filter serves to suppress the undesirable in-antiphase and in-phase current components flowing in the intermediate circuit. The additional filter can be realized either in split fashion, i.e. with two subfilters, in each case one for the in-antiphase current components and one for the in-phase current components, or in combined fashion with a common filter for both current components. The further filter, in combined or split fashion, fundamentally has a structure with a series circuit formed by a filter capacitor and a filter inductor, a filter resistor being connected in parallel with the filter inductor.