Patent · US Expired

Highpass filter of a filter arrangement for a three-phase network connected to converters

US4743873A · kind A · utility

7Cited by

3References

2Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Walter Schultz · Kleinsendelbach, DE
Ute Touchy · Erlangen, DE
Kurt J. Kruger · Huntington, US

Key dates

Filing date	Oct 15, 1986
Grant date	May 10, 1988
Priority date	—
Expiry date	Oct 15, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH03H7/1791
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

For reducing the amount of circuitry and losses in double highpasses for filter arrangements in networks with a high voltage level, the two resonance frequencies and Q-factors of the double highpass are tuned so that in a critical harmonic range, at most a harmless slight resonance peak can occur, for which purpose a series capacitor together with a series choke are connected in series with a shunt circuit grounded, in the case of high voltage and ungrounded in the case of medium voltage, of ohmic, inductive and capacitive circuit elements connected to the network.

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