Patent · US Active

Electrically coupling a first electrical supply network to a second electrical supply network

US11128237B2 · kind B2 · utility

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1References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Norbert Benesch · Heroldsberg, DE
Harald Wiessmann · Tauberbischofsheim, DE
Franz Bauer · Herzogenaurach, DE

Key dates

Filing date	May 15, 2019
Grant date	Sep 21, 2021
Priority date	—
Expiry date	May 15, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/325
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a method for operating an energy converter that couples a first supply network to a second supply network by converting electrical energy via a switch element, the switch element is operated in a switching operation and a supply-network current for one of the supply networks is adjusted depending on a comparison of the supply-network current with a reference current. In a first operating mode for the switching operation, an electrical voltage of one of the supply networks is set by a PWM method on the basis of the comparison, and a second operating mode is provided, in which the switch element is switched when, during the comparison, a difference between the supply-network current and the reference current is greater than a first predefined relative switching value and/or is smaller than a second predefined relative switching value, wherein the first and second operating modes are alternated during the operation.

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