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:
Aug. 28, 2012
Filed:
Sep. 11, 2009
-ing. Henrik Wolf, Kassel, DE;
Thomas Wegener, Kassel, DE;
Daniel Clemens, Niestetal, DE;
Harald Drangmeister, Hünfeld, DE;
-Ing. Henrik Wolf, Kassel, DE;
Thomas Wegener, Kassel, DE;
Daniel Clemens, Niestetal, DE;
Harald Drangmeister, Hünfeld, DE;
SMA Solar Technology AG, Niestetal, DE;
Abstract
A topology for surveying the integrity of a plurality of capacitors connected in series between a pair of bus lines arranged to be connected to a DC-power source comprises a plurality of resistors connected in series between the pair of bus lines, the plurality of resistors being connected in parallel to the plurality of capacitors; and a comparator comparing the electric potential of an intermediate point between two capacitors of the plurality of capacitors with the electric potential of an intermediate point between two resistors of the plurality of resistors. The comparator provides a signal signaling a difference between these two electric potentials, which indicates a loss of integrity of one capacitor of the plurality of capacitors.