Patent · US Expired

Method for operating a wind power plant and method for operating it

US7321221B2 · kind B2 · utility

43Cited by

12References

19Claims

0Family size

Assignee

General Electric Company · US

Inventors

Andreas Bücker · Hasbergen, DE
Wilhelm Janssen · Saterland, DE
Henning Lütze · Bad Bentheim, DE

Key dates

Filing date	Jul 17, 2003
Grant date	Jan 22, 2008
Priority date	—
Expiry date	Jul 17, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2101/15
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method of operating a wind turbine, wherein the wind turbine may include rotor windings of an induction generator, which includes stator coils coupled to a voltage grid, fed with rotor currents by a feed-in unit are driven by a rotor of the wind turbine; wherein the frequencies of the fed-in rotor currents are controlled depending on the rotor rotation frequency and the feed-in unit is electrically decoupled from the rotor windings in the case predetermined variations of the grid voltage amplitude and the rotor current feed-in is resumed after the decoupling caused by the variation of the grid voltage amplitude, when the currents generated in the motor windings by the variation have declined to a predetermined value.

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