Patent · US Active

Method for three-phase supply into an alternating voltage network, and three-phase inverter

US11855459B2 · kind B2 · utility

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0References

11Claims

0Family size

Assignee

SMA Solar Technology AG · DE

Inventors

Alexander Unru · Kirchbauna, DE
Moritz Welker · Friedrichsaue, DE
Neidhardt Bechtel · Kassel, DE
Sybille Pape · Vellmar, DE

Key dates

Filing date	Sep 13, 2021
Grant date	Dec 26, 2023
Priority date	—
Expiry date	Oct 24, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E40/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for three-phase infeed of electrical power from a DC source into a three-phase AC grid by means of an inverter includes measuring phase-specific grid voltages of the three-phase AC grid, and determining a grid frequency from the measured phase-specific grid voltages. The method also includes generating phase-specific voltage reference values from the phase-specifically measured grid voltages and the determined grid frequency, and generating phase-specific target current values using phase-specific predetermined target current amplitude values, the phase-specific voltage reference values and respective grid voltage amplitudes.

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