Patent · US Active

Method for operating a power converter

US11677335B2 · kind B2 · utility

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0References

20Claims

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Assignee

Siemens Energy Global GmbH & Co. KG · DE

Inventors

Stefan Hammer · Goldkronach, DE
Volker Hussennether · Nuremberg, DE

Key dates

Filing date	Aug 31, 2018
Grant date	Jun 13, 2023
Priority date	—
Expiry date	Feb 25, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/60
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method of operating a thyristor-based line-commutated multi-phase power converter on a multi-phase AC voltage connection point, which is supplied by an AC voltage network. Between the AC voltage connection point and an AC voltage connection of the power converter, a series circuit of modules is arranged for each phase. Each of the series circuits has a first electronic switching element, a second electronic switching element, and an electric energy storage device. The voltages of the phases of the AC voltage connection point are measured and, if an undervoltage is detected on a phase of the AC voltage connection point, an additional voltage adding to the voltage of that phase is generated by way of the series circuit of modules allocated to that phase in such a way that the voltage of that phase is increased, at least temporarily.

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