Wind turbine AC generator's reluctance

  • Thread starter Akmalidin
  • Start date
  • #1
69
6

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
 

Answers and Replies

  • #2
Baarken
Look at this equation, Newton's 2nd law for rotation, and lets forget about friction etc.
[itex]T_{mech}-T_{em}=J\frac{d\omega}{dt}[/itex]​
As you increase your load, i.e. increasing [itex]T_{em}[/itex], your generator slows down. To speed up you need to increase the torque input, [itex]T_{mech}[/itex].
 
  • #3
69
6
Hi,
By load I mean electric load ( Resistance, etc.) electric circuit which would be connected to the turbine.
 
  • #4
Baarken
The torque [itex]T_{em}[/itex] depends on the electric load. I.e. if you increase your electric load, [itex]T_{em}[/itex] will also increase.
 

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