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METHOD FOR STOPPING A WIND TURBINE IN TWO STAGES

  • US 20100068057A1
  • Filed: 09/17/2009
  • Published: 03/18/2010
  • Est. Priority Date: 09/18/2008
  • Status: Abandoned Application
First Claim
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1. A method for stopping a pitch controlled wind turbine comprising a rotor with at least one blade (11), a mechanical brake (31) on the high speed shaft, a pitch system (21, 23, 25) for adjusting the blade pitch angle, characterized in that it includes:

  • a) a first stage using the pitch system (21, 23, 25) for slowing down the rotor;

    b) a second stage using both the pitch system (21, 23, 25) and the mechanical brake (31) for stopping the rotor.

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