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:
Nov. 28, 2023
Filed:
Sep. 26, 2019
Fronius International Gmbh, Pettenbach, AT;
Bernd Hofer, Pettenbach, AT;
Stefan Breuer, Pettenbach, AT;
Christian Fasthuber, Pettenbach, AT;
Walter Spitzer, Pettenbach, AT;
Andreas Hofer, Pettenbach, AT;
FRONIUS INTERNATIONAL GMBH, Pettenbach, AT;
Abstract
To recognize a fault in an arrangement including a transformer having a primary winding connected in series with a DC voltage line and a secondary winding coupled magnetically to the primary winding, and including an evaluation unit that processes a secondary signal on the secondary winding, a signal component at at least one frequency is determined from the secondary signal and a signal level of the signal component is compared with a signal threshold. The fault is detected when the signal level falls below the signal threshold.