Patent · US Expired

High-pass element of a filter assembly for a line connected with static converters

US4864484A · kind A · utility

8Cited by

7References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Kurt Krueger · Stacy, US
Heino Schmitt · Buckenhof, DE
Walter Schultz · Kleinsendelbach, DE

Key dates

Filing date	Dec 5, 1988
Grant date	Sep 5, 1989
Priority date	—
Expiry date	Dec 5, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/126
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A high-pass element of a filter assembly for a line connected to static converters having a high voltage level for filtering harmonics and damping resonance sites includes a first series circuit including a first capacitor, a first choke coil, and a second choke coil. A resistor is connected in parallel with the choke coils. A second series circuit is connected directly in parallel with the second choke coil. The second series circuit includes a second capacitor and a damping resistor. On the other hand, the second capacitor and the damping resistor may be in parallel with the second choke coil and at least one other series circuit may be connected in parallel with the second choke coil. The at least one other series circuit includes a series capacitor and a series resistor.

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