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:
Jun. 02, 2015
Filed:
Dec. 13, 2013
Sma Solar Technology Ag, Niestetal, DE;
Holger Behrends, Kassel, DE;
Sebastian Bieniek, Niestetal, DE;
Thorsten Buelo, Kassel, DE;
Markus Hopf, Espenau, DE;
Gerd Bettenwort, Kassel, DE;
Marcel Kratochvil, Kassel, DE;
Christopher Merz, Daubach, DE;
Oliver Prior, Marsberg, DE;
SMA Solar Technology AG, Niestetal, DE;
Abstract
A method for detecting an arc fault in a photovoltaic power circuit includes operating a photovoltaic generator at a first working point. A first signal related to a DC-current and/or a DC-voltage in the power circuit is determined. The first signal is analyzed and it is determined whether the signal indicates the presence of an electric arc in the power circuit. If so, the photovoltaic generator is operated at a second working point and a second signal related to the DC-current and/or the DC-voltage is determined. The first and second signals are then compared; and the occurrence of an arc fault in the power circuit is selectively signaled based on the comparison.