In optimal conditions does a wind turbine collect anoff power to run the rotor at the same speed?

Question

Does a wind turbine ever collect anoff electricity to run (motor) the rotor at the same speed w/o wind?

Answer 1

I think by 'anoff' you mean 'enough'.

The power that is required to run the wind turbine at the same speed normally comes for the grid; (grid integrated wind turbines). You are refering in this case to the fixed speed wind turbines, where it's speed is governed by the synchronous speed of the AC frequency of the national grid. Normally this does not require much power without wind, because there is little drag and the rotation continues mainly by inertia; only little power is required to maintain this rotation against resistance. When there is wind, depending on wheather the turbine is direct drive (gearless) or with a gear, it is adjusted to give the optimal torque on the generator.

Answer 2

"anoff" ??

Are you asking if a wind turbine is ever operated as a motor when there is no wind?

I don't think so, what would be the reason to do that?

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