# Wind turbine AC generator's reluctance

## Main Question or Discussion Point

Hi,

I am designing small power wind turbine with output power 3kW. I would like to ask about the rotational speed dependence on the load connected. I know when generator is open circuit it rotates freely. But what about when the load is connected? Does it slow down the rotation? Because, when generator is shorted about 1 or less ohm, it shows reluctance in rotation. Therefore, Please let me know your opinion, experience and feedback.

Thank you,
Akmalidin Alimov

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Baarken
Look at this equation, Newton's 2nd law for rotation, and lets forget about friction etc.
$T_{mech}-T_{em}=J\frac{d\omega}{dt}$​
As you increase your load, i.e. increasing $T_{em}$, your generator slows down. To speed up you need to increase the torque input, $T_{mech}$.

Hi,
By load I mean electric load ( Resistance, etc.) electric circuit which would be connected to the turbine.

Baarken
The torque $T_{em}$ depends on the electric load. I.e. if you increase your electric load, $T_{em}$ will also increase.