Patent · US Active

Determining a function of a capacitor of a passive filter circuit

US11474164B2 · kind B2 · utility

1Cited by

3References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Norbert Benesch · Heroldsberg, DE
Franz Bauer · Herzogenaurach, DE

Key dates

Filing date	May 16, 2019
Grant date	Oct 18, 2022
Priority date	—
Expiry date	Sep 8, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH02J2300/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for determining a function of a capacitor of a passive filter circuit, which partially reduces line-conducted interference of an electrical device electrically coupled to a power supply system via the passive filter circuit. The passive filter circuit comprises the capacitor having a predefined capacitance value and a choke having a predefined inductance value. An electric capacitor voltage on the capacitor is detected. A connection voltage of the electrical device is detected. Spectral components are determined for the capacitor voltage and the connection voltage. The function of the capacitor is determined by analysing the spectral components in consideration of the inductance value of the choke by a statistical processing operation.

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