I have a 3 phase of grid system with a 3 phase generator as backup. The system has 3x5000 multiplus, 1x 70/150 mppt, 920ah gel battery bank, color gx and bvm. We need more power and I was wondering what is the best way forward
The new solar array will have to be placed around 80m away from the current system. At this point I have the option to either run DC power back to the system and install more mppts in parallel or I can tie in to the mini grid here.
My question what will be the best option? I have a couple of options.
1) Do I dig a trench and send 150 V DC power back to the system and intall 2 or 3 more mppts
2) If I install a 3 phase grid tie inverter 80m away from the system do I need to communicate with it? Do I need to install CTs that needs to communicate with the PV inverter? Do I need to install other communication between the system and the PV inverter? What inverter do I install? Make and max size
3) Do I use 3 single phase PV inverters in the same setup above? 3x5kva?
4) Do I install a 3 phase PV (or three single phase) inverter with the system and run high voltage DC from the solar array to the system?
Will the system integrate with the generator without damage to the generator, loads inverters?
Any help would be appreciated