Patent · US Active

Adaptive line filter

US9013840B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Walter Beyerlein · Bubenreuth, DE
Andre Gebhardt · Markt Erlbach, DE
Tobias Graßl · Denkendorf, DE
Thomas Weidinger · Erlangen, DE

Key dates

Filing date	May 31, 2012
Grant date	Apr 21, 2015
Priority date	—
Expiry date	May 3, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH03H7/427
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device for improving the filter effect of a filter connected up between an electrical energy source and a source of interference is provided. The filter is configured to feed back interference transients from ground to an input of the source of interference generating the interference transients. The device includes a measuring device for determining a leakage current flowing through the filter and a final control element configured to modify a limit frequency of the filter such that the leakage current through the filter is damped to below a predefined level if the measuring device detects the leakage current.

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