I'm having a bit of an issue so I'm looking for a little clarification on what is supposed to happen when running a backup generator on an ESS system. I have parallel mp2 24/3000 2x120. I understand that ESS uses frequency shifting to control feed in and so on and so forth. When running a little Honda 2k inverter generator for backup everything works as expected, stable voltage and frequency, batteries charging. When running my 7.5k Kubota the frequency constantly moves up and down between about 56 and 65 which causes the generator output to fluctuate, voltage is not steady (bounces between about 110 and 135) and causes the DC output (inverter charger output) to fluctuate up and down about 50 amps or so. I have grid code set to "other" with lom disabled. (Yes I have anti islanding protection) Weak ac input is not selected. when I disable ESS and run the 7.5k Genny it is absolutely stable voltage and frequency all the way up to full rated output so I don't believe it's a problem with the generator, but maybe just an issue with the way ESS works with this particular generator. When running a backup generator "generator" is selected as the input source.
I'm assuming that there is no way to temporarily disable ESS while running a generator, other than removing the assistant?
Is this expected behavior? Meaning... wouldn't it be desirable to disable ESS while a generator is running anyway? Or at least disable frequency shifting while running so the multi only synchronizes to the incoming ac rather than trying to push/pull the frequency back to the generator?
I'm still learning so go easy on me. I'm a pretty quick study though.
