Originally posted by Bucho
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I'm curious how this works so I'm going to restate what I think I learned, but correct me if I am wrong please.
The 30.4V rating is more important than the 36V open circuit volt rating.
With PWM at 30.4V and 8.23A, that's 250W in. But if the controller is converting it to 12V for the battery I only get 12V * 8.23A out = 100watts.
So I can safely use this PWM controller, but there will be a lot of power loss, maybe a lot of heat?
If I were to use an MPPT controller, for a 12V battery how does it deliver the full 250 Watts from 30V panels?
Can someone show me the math please?
Originally posted by Bucho
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Anyway, this is for a school competition and we have constraints. 15Ah is the maximum allowed.
There are several rounds, none of them use the solar panels and battery simultaneously. It's either purely solar or purely battery. I was just hoping to charge the battery in between rounds.
Thanks.
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