Hi Folks.
I am fiddling with a large diameter axial design alternator to be hooked up to a rather large Savonius rotor (eventually).
I am going with a Savonius design since I live in an area with lots of treelines that separate farm fields, so there's lots of swirl... and lots of GUSTS.
My concern is that with small increase in windspeed, I may get a surge of power that could spike quite high on me. The large diameter of the magnet rotor means that there will be a much higher magnet travel speed for each additional RPM (I think...) so I am concerned that I damage batteries.
Could I get some ideas on shunt options? How do I sense when the batteries are full, and then, and ONLY then send the excess power off to heat water or light up some light bulbs or whatever...
Thanks in advance.
