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Title:
METHOD OF OPERATING A WIND TURBINE, WIND TURBINE, WIND TURBINE CONTROLLING SYSTEM, AND PROCESSING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/120523
Kind Code:
A3
Abstract:
According to an embodiment, a method of operating a wind turbine comprising a DC-to-AC voltage converter is provided, the wind turbine being connectable to a grid via the DC-to-AC voltage converter, the method comprising: determining a line voltage of a power line connecting the DC-to-AC voltage converter to the grid; if the determined line voltage exceeds a predefined voltage threshold value, injecting reactive current into the power line, wherein the amount of reactive current injected is chosen such that an output voltage of the DC-to-AC voltage converter is kept within a predetermined voltage range.

Inventors:
LI BING (SG)
TRIPATHI ANSHUMAN (SG)
CAO SHU YU (SG)
GUPTA AMIT KUMAR (SG)
SNG ENG KIAN KENNETH (SG)
HELLE LARS (DK)
Application Number:
PCT/DK2011/050095
Publication Date:
February 23, 2012
Filing Date:
March 23, 2011
Export Citation:
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Assignee:
VESTAS WIND SYS AS (DK)
LI BING (SG)
TRIPATHI ANSHUMAN (SG)
CAO SHU YU (SG)
GUPTA AMIT KUMAR (SG)
SNG ENG KIAN KENNETH (SG)
HELLE LARS (DK)
International Classes:
F03D9/00; B60L50/10; H02J3/38
Domestic Patent References:
WO2004098261A22004-11-18
Foreign References:
US20070121354A12007-05-31
US5798631A1998-08-25
US20080315685A12008-12-25
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