Consumerbot3418
Fitting square pegs into round holes... for fun?
Thanks for your reply 3418,
Yes, my AC-Coupled setup is just a pre-existing system in parallel on the AC-In of the Multiplus.... and just feeds the house loads, then exports all excess (5kW Max Export here in Australia). I notice this AC-Coupled PV Inverter does assist with the Critical Loads AC-Out_1 of the Multiplus during high loads, but only until the Battery / Inverter catches up, or batts drain to the minimum SoC... this PV excess and grid then takes over all those loads.
The Multiplus manages to maintain a very close Zero Export/Import at the grid point (ET-112 Meter) when the AC-Coupled PV Excess is assisting the charging of the battery's in partnership with the DC-Coupled PV first thing in the morning. (See PV/Load curve pic)
I just cannot seem to get the Multiplus to feed back the other way at all to assist with the house loads. Sorry for mis-understanding @Consumerbot3418 but the Multiplus is manually set to "ON" which I understand is Invert & Charge. Within the Cerbo it is also activated (see setting pics). Also I've attached a current (right now) Screen Shot whilst at night time with no PV that illustrates the Multiplus not helping the loads at all, even when the loads are small and the grid Setpoint set to varying numbers between -50 to -500 Watts. Thoughts ?
Hm, it looks like it just doesn’t want to invert… the question is “why?”
I’m guessing that the “self consumption from battery” setting is related to your external meter, as I don’t have that option on my setup.
Again, I don’t have any experience with external metering. If it was my own system, I might be tempted to change the grid metering setting to inverter/charger, and see what changes, if anything. And maybe the other setting mentioned above.
As already mentioned, the grid code stands out as a possible culprit.
If not that, it must be another config issue, and the external metering makes it even more challenging for me to help, since I haven’t any experience, and can’t see or test behavior myself.
I also don’t use BMS communication/DVCC, so that’s yet another confounding variable.
Good idea! ? It may actually be related, though…But this is a separate issue and I dont' want to muddy the waters ?
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