Patent · US Active

Grid-connected inverter, inverter arrangement and method for operating an inverter arrangement

US9559614B2 · kind B2 · utility

5Cited by

2References

14Claims

0Family size

Assignee

SMA Solar Technology AG · DE

Inventors

Thomas E. Eberhardt · Easton, US
Josef Petschenka · Kassel, DE
Christopher Krause · Bad Honnef, DE
Christian Landau · Kassel, DE

Key dates

Filing date	Sep 13, 2013
Grant date	Jan 31, 2017
Priority date	—
Expiry date	Jul 30, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/56
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A grid-connected inverter for feeding current via a transformer into an electric power grid includes an output bridge arrangement that is actuated via a pulse width modulator, wherein a periodic auxiliary signal is used to determine switching times of the output bridge arrangement. The inverter also includes a synchronization unit for phase synchronization of the auxiliary signal with the electric power grid, wherein the synchronization unit is configured to set a predetermined phase offset (ΔΦ0) of the periodic auxiliary signal with respect to a phase of the electric power grid.

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