MRACHINI

I don't think its a Hz issue, since using the pure sinewave UPS with very stable 50hz as generator didn't work its more likely to be an issue with inverter hardware or software, I could try to disconnect parallel inverters and only use 1 to make sure its a parallel thing. is there a way to disconnect 1 inverter without shutting down output from the master inverter ? also I already have a 5.5Kw sorotec inverter used just for charging batteries from generator, and already ordered a smaller 6KW deye to use as battery charger from generator, because I want the charging from generator to be included in solarmanpv.com results, but I don't think a none parallel inverter will work with solar-assistant.io since they state that all inverters should be parallel to be included even when each inverter needs its own connection to the Host RaspberryPi.

so the UPS thing didnt work, it still put all the load on the ups, it had had 50hz stable... i really need a solution, already contacted deye support but they take forever to reply and when they reply it is something I already told them i did like the "decrease the Generator Input Rated Power".

just checked it is already 47-55 Voltage is 170-265

I have already set High Voltage = 265 Low Voltage = 170 High Hz = 56 Low Hz = cant remember but definitely under 49 do you want me to try exact numbers ? or just make the boundaries over the unstable frequency ?

my generator has an AVR and I cant fiddle with, but I have couple of 3KW and 5KW double conversion UPS, my solution is to try and connect UPS to generator and then connect the 2 8k parallel inverters to the UPS, UPS should provide a stable 50hz pure sinewave 230V & I'll limit draw to 4KW. what do you guys think ? will it work ?

I tried to limit current draw on Grid input while grid is connected and it works perfectly, so I disconnected the grid and connected the generator to the grid input and draw limit didn't work, all the load was on generator, I checked the frequency and it was a stable 50.5 for the Grid, while the generator had unstable frequency between 52.2 & 53.6, I tried the same thing but on generator input, so I connected Grid to generator input and then Generator to generator input and current limit only works when frequency is stable. if you want to try it keep in mind all this testing was done with grid feed disabled.

what should be earthed ? what are you referring to ? I tried connecting Generator to 1 of 2 8k Deye parallel single phase inverters, waited for a lot of time but inverter never switched to generator, as soon as I connected the generator to the second inverter, 30 seconds and the inverters switched to generator input. so for me I have to connect generator to all parallel inverters.