tricky roof situation HELP

[oslosolar]

I have a tricky roof situation basically 3 small area’s one facing south the other 2 which really are the same roof just separated by different pitches are facing east.
Now I presumed we could implement an east south split there would be 8 X 190wp on the south roof
8 X 190wp on the lower part of the east roof this has a pitch of approx 10-15 degrees’
3 X 190wp on the higher east side part of the roof this like the south roof has a pitch of 30 degrees’

All part of the same outbuilding which has it’s own electricity supply and I was hoping to run them all into an inverter, but PV sol seems to be having non of it and is trying to split them into having separate inverters which is an obvious non starter.

Look forward to hearing your thoughts

cheers

 

[Zach Halley]

Hi Oslo, probably too late for this now.

If I was you i would knock the 3 190Wp panels from the East higher roof altogether. If you want a split array with panels at different orientaions & inclinations on a single inverter, you will need one with multiple MPPTs. At that range Power-One & Danfoss are the only ones I know with more than one MPPT. They only have 2. So you could hook the 2 strings of 8 to that. I would be very surprised if you could find a good quality inverter rated for 500-600W or even one with an MPPT that would switch on at that voltage (less than 100, I would presume). The problem is in economies of scale and the cost of good quality circuit components at that scale.