Patent · US Active

Method for operating a converter and corresponding apparatus

US8116108B2 · kind B2 · utility

4Cited by

9References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Frank Becker · Munich, DE
Norbert Benesch · Heroldsberg, DE

Key dates

Filing date	Jul 7, 2009
Grant date	Feb 14, 2012
Priority date	—
Expiry date	Jan 31, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH02M7/219
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for operating a line-side fundamental-frequency-clocked converter is disclosed. The converters has a bridge circuit with, for example three, upper and, for example three, lower semiconductor switches, which are connected to respective positive and negative terminals of a DC link circuit. Center taps of connected pairs of the upper and lower semiconductor switches are connected to the line voltage phases. Two upper or two lower semiconductor switches are simultaneously activated during fundamental frequency operation for a predetermined time period before or after a natural trigger instant of the semiconductor switches caused by a line voltage angle. An estimated line voltage angle for clocking the semiconductor switches is tracked based on two phase currents measured while the two upper or two lower semiconductor switches are simultaneously active.

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