Something special i should think about with follwing setup
MPPT 75/15 parallel with MPPT 100/20
asked
Parallel-MPPT-System
That'll be fine Sword. The blue boxes will look better on the wall than those TS ones though.. :)
If i use one PV Array with 2x100w in series and the other PV Array with 2x100w in parallel of course with blue boxes Victron 75/15 MPPT :)
is that ok ?!
Yes, in principle that's ok. But it's nice to have a good difference between strung Vpanel and Vbat. Will perform better in less than optimal conditions.
And stringing '12V' panels parallel into 12V batts mightn't work so well. So look at your panel V's to be sure.
This is the specs of new panels 2x100w
Generator Performance (Wp) 100 Wp
Module Voltage (Vmp) 17,8 V
Max. Current (Imp) 5,62 A
No-Load Voltage (Voc) 21,3 V
Short-Circuit Current (ISC) 6,07 A
This is the specs of old panels 2x100w
Generator Performance (Wp) 100 Wp
Module Voltage (Vmp) 18,0 V
Max. Current (Imp) 5,56 A
No-Load Voltage (Voc) 21,5 V
Short-Circuit Current (ISC) 6,04 A
I was also thinking about this setup as i have some shading during the day
Yeh, those are '12V' panels, and best strung serially in pairs. Like in your diagram, but weren't you talking 2x mppt's?
Then can i do that with 2 different uits ?! 75/15 and 100/20 ?
I do this with my system. I have 1x150/100 and 2x150/35.
It works ok, but because the three controllers are not truly networked, they do their own thing.
There was a post here a couple of days ago letting us know that all of that will very soon change (at least for devices that have Bluetooth)... true parallel operation.
Yea!
