Patent · US Expired

Method and device for controlling a power converter valve that can be turned off and has at least two series circuits

US6545452B2 · kind B2 · utility

10Cited by

4References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Manfred Bruckmann · Wendelstein, DE
Rainer Marquardt · Berlin, DE
Rainer Sommer · Heroldsbach, DE

Key dates

Filing date	Feb 21, 2001
Grant date	Apr 8, 2003
Priority date	—
Expiry date	Feb 21, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/088
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Method and apparatus for controlling a turn-off power converter valve having at least two series connections. Each non-latching power semiconductor switch of this power converter valve has an active collector-emitter limiting circuit. When a rising edge of a drive signal that is provided arrives, a predetermined value of the reference limited voltage of the active collector-emitter limiting circuit is decreased to a low value and is increased to the predetermined value again during a turn-off operation. Using a switch-on command, it is possible to balance the voltage sharing on the non-latching power semiconductor switches of a turn-off power converter valve having at least two series connections.

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