Patent · US Expired

Switch-off method for a three-phase reactive power compensator with two thyristor switches

US5684389A · kind A · utility

6Cited by

3References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Heinz Tyll · Erlangen, DE
Frank Schettler · Erlangen, DE

Key dates

Filing date	Dec 27, 1995
Grant date	Nov 4, 1997
Priority date	—
Expiry date	Dec 27, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E40/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A switch-off method for a three-phase solid state reactive power compensator for a rotary three phase power system has first and second thyristor valves receiving respective first and second firing signals, and three capacitors. The firing signals are suppressed to a point in time for first turning off the second firing thyristor valve in immediately successive phases in direction of rotation of the three-phase power system.

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