The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2015
Filed:
Mar. 23, 2011
Bing LI, Singapore, SG;
Anshuman Tripathi, Singapore, SG;
Shu Yu Cao, Singapore, SG;
Amit Kumar Gupta, Singapore, SG;
Eng Kian Kenneth Sng, Aarhus N., DK;
Lars Helle, Suldrup, DK;
Bing Li, Singapore, SG;
Anshuman Tripathi, Singapore, SG;
Shu Yu Cao, Singapore, SG;
Amit Kumar Gupta, Singapore, SG;
Eng Kian Kenneth Sng, Aarhus N., DK;
Lars Helle, Suldrup, DK;
Vestas Wind Systems A/S, Aarhus N, DK;
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.