alexmouris
New Member
Greeting to all,
I would like your advice on how to convert my friends system which is off grid with battery to a Grid tied system.
Current setup.
2x540watt Sharp Panels ( limited roof space. max i can do is 3x540 !!!!!! )
Victron 100v-50a smart MPPT charger
Victron 1200VA 24v phoenix inverter
2.5KWH lifepo4 battery (eve cells with JK BMS)
Automatic transfer Switch using Hager relay.
Use case.
The offgrid system powers the fridge and the rack (router, poe switch, 2 servers, 3 Access Points) total 300-800 watt consumption
When the batteries are low, in the afternoon, the automatic transfer switch goes into Grid mode until the next morning when the sun is up again.
What i want to achieve.
1) I would like to Grid Tie the setup so that it supplies power to the rest of the house.
2) I would also like to have the batteries at a constant charge (lets say 75%) and to use them only as backup power when the grid fails (for fridge and freezer and maybe emergency lighting)
3) I would also like to not feed back to the grid because the license fees to do that in my Country are too much to worth it.
The Grid
The Grid is 3 phase 240volt 50HZ.
My concerns
1) i can not find a 3phase inverter that can provide power to the grid that works with only 3 panels. (i am normally at 110-140 volt PV input)
2) The inverter Must have a no feed to Grid function to Avoid problems with the power company.
Is this even possible?
Thank you all for your time.
I would like your advice on how to convert my friends system which is off grid with battery to a Grid tied system.
Current setup.
2x540watt Sharp Panels ( limited roof space. max i can do is 3x540 !!!!!! )
Victron 100v-50a smart MPPT charger
Victron 1200VA 24v phoenix inverter
2.5KWH lifepo4 battery (eve cells with JK BMS)
Automatic transfer Switch using Hager relay.
Use case.
The offgrid system powers the fridge and the rack (router, poe switch, 2 servers, 3 Access Points) total 300-800 watt consumption
When the batteries are low, in the afternoon, the automatic transfer switch goes into Grid mode until the next morning when the sun is up again.
What i want to achieve.
1) I would like to Grid Tie the setup so that it supplies power to the rest of the house.
2) I would also like to have the batteries at a constant charge (lets say 75%) and to use them only as backup power when the grid fails (for fridge and freezer and maybe emergency lighting)
3) I would also like to not feed back to the grid because the license fees to do that in my Country are too much to worth it.
The Grid
The Grid is 3 phase 240volt 50HZ.
My concerns
1) i can not find a 3phase inverter that can provide power to the grid that works with only 3 panels. (i am normally at 110-140 volt PV input)
2) The inverter Must have a no feed to Grid function to Avoid problems with the power company.
Is this even possible?
Thank you all for your time.