Running 24v and 12v Solar in parallel???
Just curious what would happen if one was to run two systems, side by side (i.e; in parallel)... 12v/pwm and 24v/mppt? In particular, how would the two charge controllers handle things? Would t...
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2oldman wrote:westend wrote:Or series the 12vs and parallel to the two 24s.
For the OP's situation, it may be more economically efficient to sell the 12 V system and add a third 24V module.
Either way, it would be taxing the 30a mppt controller. Its specs say 780w/24v, 390w/12v, but that's assuming less than full power, and not leaving that 20% margin. But I've already seen my two 140w/12v panels put out over 300w on several occasions, so even the addition of a 100w/12v panel would be pushing it. And even three 250w/24v panels would be, as well.
So, short of replacing pretty much everything, I think I'd be better to just add two 24v panels, and run two systems... and yes, I would like to have the option of running the 12v pwm system as a portable, at some point in the future.
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But back to my original concern... would I be able to do a real time comparison in a paralled configuration, i.e;, two systems on one bank?
