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. 22, 2014
Filed:
Jan. 29, 2010
Christian Dietrich, Augsburg, DE;
Werner Fischer, Heilsbronn, DE;
Jörg Hassel, Erlangen, DE;
Marc Hiller, Lauf an der Pegnitz, DE;
Carsten Probol, Buckenhof, DE;
Rainer Sommer, Heroldsbach, DE;
Christian Dietrich, Augsburg, DE;
Werner Fischer, Heilsbronn, DE;
Jörg Hassel, Erlangen, DE;
Marc Hiller, Lauf an der Pegnitz, DE;
Carsten Probol, Buckenhof, DE;
Rainer Sommer, Heroldsbach, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
The invention relates to a method for identifying dirt and/or dew on components of a voltage intermediate circuit converter. According to the invention, the temporal curve of a partial discharge pulsed current is detected at least during a precharging process of an intermediate circuit capacitor of the voltage intermediate circuit converter comprising at least one capacitor, wherein a frequency spectrum is calculated from said current pulse, and wherein depending of the result, a dirt warning and/or a dew warning is activated. Thus, the degree of dirt and/or dew of said voltage intermediate circuit converter can be determined at least during a charging process of an intermediate circuit capacitor of a voltage intermediate circuit converter, thereby preventing a breakdown including the consequences thereof.