Originally Posted by evilclem
So if I'm not mistaken, you have 2 x 1600W wind generators and a 300W diversion load. Why not simply increase this diversion capacity to 3.2kW (I see no reason you can't parallel 3 controllers to achieve this)?
If my calculations are correct, in the current configuration the resistor bank can dissipate about 800 watts at 28.4 volts (diversion load cut-in) under reasonable conditions this is enough to prevent overcharging. however we run into allot of unreasonable..
.. we have been working with the manufacturer to find solutions. so far we have set the turbines so they yaw passively in higher winds, this limits the output to about 600 watts each ( manageable, but not ideal ). As you said, we can add more loading to handle greater current dissipation, but in lower wind speeds this cycles the controller allot resulting in damaged components. I dont know why, poor designs I suppose.
I would like to find a solution that will work effectively over a much wider operational range then currently available. we either have to much or to little wind. and the loads on the system vary greatly with use.
I don't know the answer to why not more load resistors, other than it effects the ability of the system to effectively charge the batteries properly.