Ben House wrote:Hook the turbine up to your charge controller as if it is a solar panel. If you hook it up that way the battery voltage is on one side of the charge controller and the solar/turbine is on the other so that the controller doesn't think your batteries are 15v anymore.
Wendy Howard wrote: Every winter is different. In wet winters I'm laughing, but they're about one in three at the moment. Having added another couple of panels this winter, in dry winters I can just about make enough in the 1 hour 50 minutes I have sun at winter solstice to cover daily needs (though not complete a charge cycle).
The solar array runs through one MPPT charge kcontroller and the hydro through another. As the batteries reach full charge, the solar controller will progressively reduce the charge it takes from the panels while the hydro keeps churning away until the float period times out, whereupon it dumps to a heating element. The two charge controllers are from different manufacturers and calculate battery voltage slightly differently so there was a little bit of tweaking of the bulk, absorb and float set points for each to get them in synch and then the hydro controller was set to marginally higher voltages so the solar will duck out first. It all works fine together. In good wet winters, I can use the hydro to keep 2 separate systems (one 12V, the other 24V) fully charged.
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