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. 31, 2015
Filed:
Dec. 07, 2011
Amit Kumar Gupta, Singapore, SG;
Anshuman Tripathi, Singapore, SG;
Ove Styhm, Hadsten, DK;
Lars Helle, Suldrup, DK;
Yugarajan Karuppanan, Singapore, SG;
Gil Lampong Opina, Jr., Singapore, SG;
Amit Kumar Gupta, Singapore, SG;
Anshuman Tripathi, Singapore, SG;
Ove Styhm, Hadsten, DK;
Lars Helle, Suldrup, DK;
Yugarajan Karuppanan, Singapore, SG;
Gil Lampong Opina, Jr., Singapore, SG;
Vestas Wind Systems A/S, Aarhus N, DK;
Abstract
A method of operating a wind turbine is disclosed, the wind turbine comprising a power generator, a machine-side converter connected to the power generator, a line-side converter connected to a power grid through associated power components, and a DC-link connected between the machine-side converter and the line-side converter. The method includes monitoring the power grid for overvoltage events, and upon detecting an overvoltage event: (1) disabling active operation of the machine-side converter and the line-side converter, (2) enabling an AC load dump connected between the machine side converter and the power generator in order to dissipate power output from the power generator, (3) waiting for a waiting period, and (4) enabling active operation of the line-side converter and the machine converter when the overvoltage event ends within the waiting period.