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:
Jan. 29, 2013
Filed:
Nov. 20, 2009
Alexander Ahlborn, Kassel, DE;
Wilfried Groote, Vellmar, DE;
Wolfgang Reichenbaecher, Staufenberg, DE;
Alexander Ahlborn, Kassel, DE;
Wilfried Groote, Vellmar, DE;
Wolfgang Reichenbaecher, Staufenberg, DE;
SMA Solar Technology AG, Niestetal, DE;
Abstract
A method for determining a load capability of a direct current ('DC') voltage source connectable to an alternating current ('AC') power grid having a predetermined frequency via an inverter and a grid disconnect switch includes controlling, while the grid disconnect switch is in an open position, the inverter so as to convert a DC input voltage to a test frequency different than the predetermined frequency of the AC power grid so as to increase a test load acting on the DC voltage source above an internal consumption of the inverter at the predetermined frequency. The DC input voltage is measured while the grid disconnect switch is in the open position.