I'm about to fit some new solar panels
and a Wind generator
to my existing system and I'm confused on the bast way to go.
I currently have 4 x 110 watt panels
into a 30amp MPPT
I'm intending to fit a D400 which has it's own controller and dump resistors.
I also have 2 x 275 watt panels
I intend to add as well.
My initial thoughts are
Leave the existing panels and controller alone.
Install the D400 on it's own controller
Get 2 x 20 amp controllers and put each new panel on its own controller as 20 amp controllers are cheap
, it gives me redundancy, if one panel is shaded the
then the other is still ok.
So here is where I get confused. Can multiple controllers co-exist? Would one controller sense the higher charge voltage being put in by one controller and then think that the battery
is charged to a higher level than it is, and then effectively either switch off or go float?
How do I set it up so all controllers put in the maximum they can without getting confused by the other controllers, or do I have to go to one big mother of a controller? Is there some sort of sense diode I have to put in between the controllers?