Hi everyone. For a few years now, I’ve been using an Easysolar 2 GX 48/3000 with a lithium battery for residential use. Now I’ve purchased a MultiPlus 2 48/3000 to increase the parallel power. It also features an Energy Meter et112 as a grid meter. I’ve programmed the inverters in parallel, and they work, but the system can no longer maintain the 50 watts set as the grid reference; in fact, it seems to inject power into the grid from the battery. Any ideas?
I tried activating ess with the same settings on both products, then I tried activating it only on the master but I still have the same problem. I set in ess not to inject excess dc photovoltaic dc.
I would like my products to never inject anything on AC in since I have all the loads on AC out 1
One strange thing I see is the meter readings. It shows -70W with -3.3A.
But 3.3A x 230V x 0.8 should show around -600/650W.
I am seeing a similar issue. I had a single 48/3000 multiplus 2 and this would work great. It would maintain the 50w on the grid and try to put all of the grid connected PV towards battery charging.
I had excess PV due to the limitations of the multiplus 2 charging at its max.
So to increase the charging capacity to try and use all the grid connected PV and export as little as possible, I got another 48/3000 MP2.
They are setup in parallel, with identical AC lengths and identical DC lengths etc.
But it now looks like the MP2’s are not evenly trying to charge the battery. I am actually now exporting more to the grid that I was originally, and the batteries and not being recovered.
I have 2 x ET112 meters, one on “Grid Metering” and one on the Grid connected PV.
What it looks like is:
The MP2’s are trying to share the charging, but only 1 is actually charging.
I need to be home during the day to put a clamp meter on the DC side of the inverter.
I have nothing limited in the charging or invertingand no DVCC set up.
I have the same problem while charging, but for me, the main issue is the lack of/incorrect regulation of the grid. Yesterday I tried creating a flying circuit for AC with the same characteristics, but the problem remained the same. I tried reversing the master, and the problem was significantly reduced. In any case, on AC Out 1, I get 4A output from one device and 2A output from the other… I don’t know if they should be identical.
This evening I discovered something that I think is strange. When I opened the VEConfigure page in the VE.Bus System Configurator software, in the parameters screen on the left I don’t see the A output on the slave device; I only see them on the master device. Is this correct in a parallel configuration? Can anyone check in your parallel? Otherwise, I have to reset everything and invert the master/slave connections to verify.
