November 3, 20205 yr On 2020/11/01 at 8:20 PM, Marius Fourie said: Let's be clear, the Axpert cannot blend power linear between PV and Grid. It does not convert the grid to DC, convert the PV to a suitable DC level, add the two and invert the sum of the DC power to AC @Marius Fourie I have to agree with @Gnome - your statement is correct for all the Axperts except the King, which is double conversion. It can and does blend PV and grid if necessary. In a parallel setup like mine you cannot even use bypass - the only source of AC output is the inverter, which does not know or care where the DC that feeds it comes from. On 2020/11/01 at 8:20 PM, Marius Fourie said: The point is not if the King can find out what the state of charge is by asking the BMS, it is what it can do with the information, and the answer is nothing. Not quite correct - it uses the information from the BMS for target charge voltages and to reduce the rate of charge as it approaches 100%. It does however still use voltages and not SOC for thresholds for switching to grid or back to battery mode (unbelievably - how difficult could that be to program?). On 2020/11/01 at 8:20 PM, Marius Fourie said: There are so much that the Victron offers the user if you understand it. And yes, King will catch up but by that time Victron has gone much further ahead. I can understand why @pierre. might think that you are not entirely objective.🙂 Please do not misunderstand me - I think the Axpert King is OK hardware for a very good price, but the potential is limited by terrible firmware and non-existent support. If and when my setup needs replacing I will look elsewhere, and in the meantime I would not recommend it. Companies like Voltronics should, in my opinion, not be supported. Darwin will surely smile... Edited November 3, 20205 yr by Calvin
November 3, 20205 yr I concur with Gnome and Calvin. The King definitely does blend the PV and AC incoming. It is one of the reasons I went for the King. I was a bit dubious if the King could do this blending and.... sadly there was no definite information on this on the internet. One of the first things I did when I installed it was to test and confirm that it could indeed do this blend of AC and grid. I added a Victron BMV to my Pi running ICC and now I get much more accurate SOC information and, in my opinion, the BMV is a must-have. My biggest gripe with the King is the max 145 VOC which means more cabling...
November 4, 20205 yr 19 hours ago, GreenMan said: I concur with Gnome and Calvin. The King definitely does blend the PV and AC incoming. It is one of the reasons I went for the King. I was a bit dubious if the King could do this blending and.... sadly there was no definite information on this on the internet. One of the first things I did when I installed it was to test and confirm that it could indeed do this blend of AC and grid. I added a Victron BMV to my Pi running ICC and now I get much more accurate SOC information and, in my opinion, the BMV is a must-have. My biggest gripe with the King is the max 145 VOC which means more cabling... I love the king inverter. I will install 2nd one next year to go completely semi off-grid.
July 24, 20214 yr On 2020/08/03 at 1:57 PM, Denarius said: solar battery blend Unless someone can show me proof of this working and/or the AC blending with DC I will believe it, out of all the installs I've yet to see this working in action.
July 25, 20214 yr 1 hour ago, nsbrown said: Unless someone can show me proof of this working and/or the AC blending with DC I will believe it, out of all the installs I've yet to see this working in action. In the installs you mention, which models were used? This chart is from an Axpert King install, although you will get the same from an Axpert Max, InfiniSolar V2, etc. As the day starts and PV gets generated, the Grid power used becomes less and less. This is SUB mode and is commonly used. The cheaper and older axperts doesn't have an SUB, they have Utlity and SBU, which gives them a hard cutover to and from grid:
July 25, 20214 yr 5 hours ago, InfiniSolarVII said: In the installs you mention, which models were used? This chart is from an Axpert King install, although you will get the same from an Axpert Max, InfiniSolar V2, etc. As the day starts and PV gets generated, the Grid power used becomes less and less. This is SUB mode and is commonly used. The cheaper and older axperts doesn't have an SUB, they have Utlity and SBU, which gives them a hard cutover to and from grid: That's interesting that the PV and grid are being utilised at the same time, what about the battery? I don't see it there, are you able to add that data? Also, what does it show on the inverter interface when the 2 are being used (grid and PV)?
July 26, 20214 yr Just remember that the grid is used at a much lower efficiency than with a grid tied inverter as it's converted to DC and then back to AC.
October 20, 20214 yr On 2021/07/25 at 1:35 PM, InfiniSolarVII said: This chart is from an Axpert King install, although you will get the same from an Axpert Max, InfiniSolar V2, etc. As the day starts and PV gets generated, the Grid power used becomes less and less. This is SUB mode and is commonly used. More recently the cheaper models also blend PV and grid. Notice how the "Solar first" output source priority changed in the manual below. Axpert MKS II Axpert MKS III:
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