Patent · US Expired

Method for protection of a matrix converter against overvoltages, and an active overvoltage device

US6704182B2 · kind B2 · utility

14Cited by

6References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Manfred Bruckmann · Wendelstein, DE
Olaf Simon · Weingarten, DE

Key dates

Filing date	Sep 24, 2002
Grant date	Mar 9, 2004
Priority date	—
Expiry date	Sep 24, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02M5/297
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and a device for protecting a matrix converter is disclosed. The matrix converter has nine bi-directional circuit-breakers which are arranged in a 3×3 switch matrix. A highest potential is detected from all input and/or output potentials or from all input potentials and at least one output potential. Bi-directional circuit-breakers of the matrix converter are controlled when a predetermined threshold value is exceeded. This arrangement protects the entire matrix converter from overvoltages. The converter can be produced easily and cost-effectively.

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