Patent · US Expired

Method for controlling freewheeling paths in a matrix converter

US6603647B2 · kind B2 · utility

22Cited by

3References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Christian Briesen · Florstadt, DE
Manfred Bruckmann · Wendelstein, DE
Marco Kaiser · Haar, DE
Hubert Schierling · Erlangen, DE
Olaf Simon · Weingarten, DE

Key dates

Filing date	Sep 27, 2002
Grant date	Aug 5, 2003
Priority date	—
Expiry date	Sep 27, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02M5/271
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for controlling positive or negative freewheeling paths of the phases of a matrix converter with nine bidirectional power switches arranged in a 3×3 switch matrix is described. Each power switch has two back-to-back series-connected semiconductor switches. Those semiconductor switches are actuated that have the most positive/negative line voltage to provide a negative/positive freewheeling path capable of carrying a negative/positive load current. The matrix converter can be immediately disconnected if an error is detected or if the matrix converter is inadvertently switched off, without damaging the matrix converter.

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