Having just read BlueEnergy's comment on the burn out problem I wonder if the first thing may not be to try altering the characteristics for a higher wind area before trying to furl in lower winds.
I suspect that using a 12v machine on 24v could give far better results in a high wind area. If that is too drastic then a winding between the two may be worth looking at.
If there are long periods where they are reliant on low winds this may not be so good but if the main energy capture is in winds above 12mph I suspect a winding with less turns of thicker wire would be a spectacular improvement.
Probably too early for this sort of comment until Dan has been able to study the local wind conditions, but optimising for too low a cut in speed does really mess up the top end in terms of stator heat and top end power out.
Flux
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