The affects of Lenz's Law on Wind Turbines

AI Thread Summary
Wind turbines continue to turn because the wind provides a constant source of energy that overcomes the counter electromotive force induced by the generator. While Lenz's law states that the induced current opposes the magnetic field, the ongoing wind supply ensures that the turbines reach an equilibrium speed rather than stopping completely. In an ideal scenario with consistent wind and electrical demand, turbines would maintain a steady rotation. The interaction between wind speed and electrical load is crucial for the turbine's operation. Therefore, as long as there is sufficient wind, turbines will not cease to function.
babayevdavid
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Hi,

If an electrical generator induces a current that opposes the shifting magnetic field that creates it then why don't the wind turbines on wind farms just stop turning after a while? Is it because they are not directly connected or drawn on by electrical devices?

Thank you all in advance!
 
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babayevdavid said:
Hi,

If an electrical generator induces a current that opposes the shifting magnetic field that creates it then why don't the wind turbines on wind farms just stop turning after a while? Is it because they are not directly connected or drawn on by electrical devices?

Thank you all in advance!

Because of the wind...
 
Sure, but at some point wouldn't the wind not be enough to counteract the effects of the counter electromotive force?
 
babayevdavid said:
Sure, but at some point wouldn't the wind not be enough to counteract the effects of the counter electromotive force?

At some point you will reach equilibrium and the wind will counteract the effect of Lenz's law exactly and the turbine will simply spin at that speed forever (in an ideal world with constant current and wind supplies) .
 

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