How do wind turbines operate?

Wind turbines are sophisticated machines with computer controls.
A typical operating sequence is as follows:

  • when the wind speed reaches around 4 metres per second, the turbine blades will spin up to operating speed, usually around 14 to 29 rpm (varies by turbine model), and start generating electricity
  • as the wind speed increases, the generator output increases
  • when the wind speed increases to the rated wind speed (usually around 12-13 metres per second), the generator will output its nameplate-rated capacity (i.e. a 2.3MW turbine would now output 2.3MW)
  • as the wind speed continues to increase, the generator output will remain at the rated capacity (i.e. 2.3MW) until the wind reaches the cut-out speed (usually around 25 metres per second)
  • at this wind speed, the turbine will deploy its tip-brakes and then apply its disk brake, stopping the blades in a few revolutions
  • it will then rotate itself 90 degrees out of the wind and park itself
  • if the wind speed drops to a level below the cut-out speed for a sufficient length of time, the turbine will point itself back into the wind, release the brake, and resume power production.

Monday 17/02/2014

  • 3 loads (incl. 3 blades) via route N2
View All

Tuesday 18/02/2014

  • 3 loads (incl. 3 blades) via route N2
View All

Wednesday 19/02/2014

  • 3 loads (incl. 3 blades) via route N2
View All

Thursday 20/02/2014

  • 3 loads (incl. 3 blades) via route N2
View All

Friday 21/02/2014

  • 3 loads (incl. 3 blades) via route N2
View All

-->
Majority shareholder, Globeleq is jointly managing the construction of Jeffreys Bay Wind Farm and will play a key role as the management company during operations.