Quote:
Originally Posted by MPaulHolmes
DISCLAIMER: This made sense to me last night, after being in the sun all day, so I could be wrong. haha:
Yes, since it's feeding a 48v battery bank, the voltage is approximately constant. Well, higher current into the batteries causes the battery bank voltage to go up slightly because of the internal resistance. Am I thinking about this wrong?
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I guess charging a battery bank is close enough to constant output voltage. It will be a narrow range of output voltage ...
So maximizing output current ... will maximize the input V * I for the buck converter ... that follows!
I don't know how you have the PV arrays wired. Do you need a buck/boost circuit for cloudy days ... wait ... you said Arizona. Never mind!