Patent · US Active

Lossy triphase low-pass filter

US8743572B2 · kind B2 · utility

2Cited by

3References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Hubert Schierling · Erlangen, DE
Benno Weis · Hemhofen, DE

Key dates

Filing date	Apr 1, 2009
Grant date	Jun 3, 2014
Priority date	—
Expiry date	Dec 27, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH03H1/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a lossy triphase low-pass filter having a filter choke, a filter capacitor, and an attenuation element per phase of said the low-pass filter, wherein one filter capacitor and one attenuation element each are electrically connected in series. Two diodes are provided as attenuation elements, which are electrically connected to each other in an anti-parallel manner. In this manner a lossy triphase low-pass filter is obtained, the power loss of which is significantly reduced without any loss of the attenuation effect.

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