Patent · US Active

Topology surveying a series of capacitors

US8253424B2 · kind B2 · utility

3Cited by

11References

21Claims

0Family size

Assignee

SMA Solar Technology AG · DE

Inventors

-Ing. Henrik Wolf · Kassel, DE
Thomas Wegener · Neuruppin, DE
Daniel L. Clemens · Kassel, DE
Harald Drangmeister · Kassel, DE

Key dates

Filing date	Sep 11, 2009
Grant date	Aug 28, 2012
Priority date	—
Expiry date	Aug 10, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH02H7/16
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.