Patent · US Expired

Thyristor arrangement with turnoff protection

US7521730B1 · kind B1 · utility

0Cited by

4References

3Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Franz-Josef Niedernostheide · Hagen am Teutoburger Wald, DE
Martin Ruff · Vaterstetten, DE

Key dates

Filing date	Sep 29, 2000
Grant date	Apr 21, 2009
Priority date	—
Expiry date	Sep 29, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/79
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A thyristor arrangement includes a main thyristor, at least one auxiliary thyristor, a resistance device which electrically connects the auxiliary thyristor and the main thyristor to one another, and an optical triggering device for breakover triggering of the main thyristor via the auxiliary thyristor and the resistance device. The resistance device defines a time-dependent ohmic resistance in such a way that the value thereof is relatively large during a switch-on phase of the main thyristor and relatively small during a current-carrying phase of the main thyristor.

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