Patent · US Expired

Overvoltage protection apparatus for a matrix converter

US6496343B2 · kind B2 · utility

34Cited by

4References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Jochen Mahlein · Karlsruhe, DE
Walter Springmann · Höchstadt an der Aisch, DE

Key dates

Filing date	Feb 7, 2001
Grant date	Dec 17, 2002
Priority date	—
Expiry date	Apr 13, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH02H7/1216
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An overvoltage protection apparatus for a matrix converter has nine bidirectional power switches which are arranged in a 3×3 switch matrix. The overvoltage protection apparatus has three varistors on both the network side and the load side, which are each connected, in delta, to input and output connections of the matrix converter. A result, the overvoltage protection apparatus has considerably reduced physical volume, as a result of which the component costs for the overvoltage protection apparatus are very low.

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