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Expired Canadian patentCanada

Method of controlling a wind turbine connected to an electric utility grid

CA 2591598 C · Owner: Esbensen, Claus · Inventors: Esbensen, Claus; Nielsen, John Godsk

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to a method of controlling a wind turbine connected to an electric utility grid during malfunction in said electric utility grid (9). The method comprises the steps of detecting a malfunction in said electric utility grid and operating at least two control units of said power converter (12) in relation to at least one power converter limit value. The invention also relates to a control system for a wind turbine connected to a utility grid and a wind turbine.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed December 28, 2004 and granted October 2, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 28, 2004
GrantedOctober 2, 2012
Term endedDecember 28, 2024
Patent numberCA 2591598 C
Classification (IPC)H02P9/10

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 28, 2004Patent grantedOct 2, 2012Term endedDec 28, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.