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:
Jan. 28, 2020
Filed:
Jun. 16, 2016
Vestas Wind Systems A/s, Aarhus N, DK;
Yi Zhou, Hefei, CN;
Gert Karmisholt Andersen, Hovedgård, DK;
Manoj Gupta, Singapore, SG;
Vajira Suminda Ganepola, Singapore, SG;
Ciprian Biris, Hinnerup, DK;
Miguel Angel Cova Acosta, Singpore, SG;
VESTAS WIND SYSTEMS A/S, Aarhus N, DK;
Abstract
A method is provided of protecting a wind turbine with a doubly-fed induction generator (DFIG) against a sub-synchronous resonance (SSR) event acting on the wind turbine. A plurality of power-output values or current-output values is measured over a given period of time that corresponds to a measurement cycle. It is determined whether power-output values or current-output-values measured in the at-least-one measurement cycle are indicative of an SSR-event critical for further operation of the wind turbine. The wind turbine is shut down if the measured power-output values or current-output values are indeed indicative of an SSR-event critical for operation of the wind turbine.