I have been reading forever about the solar regulator
battle. I don't think I have ever seen it realistically solve with out actually linking the 2 regulators simliar to a ganged BlueSky MPPT
controller. maybe some day they will build a wind
gen regulator to work with the solr controller.
Makai carries 480 watts of solar
with the SB50 MPPT
controller and an unregulated KISS. Onley one time had we had to turn of the wind gen to prevent overcharging of the batteries. I usually turn on the watermaker
or turn the fridge freezer
temp down to use the excess power.
KISS doens't recommend a regulator at all as most chop 30% of the power output off. Doug's recommendation is to have a battery
bank that will carry a charge up to the expected average output. In our case per trojan 2 1/2% of the total amp capacity can be applied continously to the bank with causing damage. For us that is about 17 amps continous. Most wind gen don't put that out most of the time. That excludes any systems that draw down the bank.
How it works with the MPPT controller. The controller actually senses the battery
and the wind gen and adjusts it self according to what it calculates as the current
state of the battery and the max charge it can take.
During the morning hours we see the solar panel put out at full power and the wind gen. There is no issue as the total is less than 60AMP/hr and in the morning bulk recharges with the gen the bank will take much more than that with out damage. So we actually get a very fast morning recharge as both unit apply the max in the bulk phase, rather than one or the other cycle up or down.
using 2 seperate controllers they keep sensing each others output and adjust up or down and rechecking. In the airx inpaticular, as we have seen with friends, wind up to charge, sense the over charge and then wind down. This bouncing back and forth between the controllers taking turns doesn't hurt the battery as the max charge is always being controlled, but is annoying and can increase the wear on the airx. Not to mention your neighbors. (I find the airx to be very noisy)
I like our setup and would recommend anyone researching to look at this approach. It makes sense and it works.