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, 2021
Filed:
Dec. 12, 2019
Applicant:
Sma Solar Technology Ag, Niestetal, DE;
Inventors:
Assignee:
SMA Solar Technology AG, Niestetal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/40 (2020.01); H02H 1/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/40 (2013.01); H02H 1/0015 (2013.01);
Abstract
A method of detecting a serial arc fault in a DC-power circuit includes injecting an RF-signal with a narrow band-width into the DC-power circuit and measuring a response signal related to the injected RF-signal in the DC-power circuit. The method further includes determining a time derivative of the response signal, analyzing the time derivative, and signaling an occurrence of a serial arc fault in the power circuit based on the results of the analysis. A system for detecting an arc fault is configured to perform a method as described before.