I have a customer who recently trialled combining his systems into a Microgrid and experienced a significant reduction in the output capacity of the individual inverters.
For example his 10kVA MP–II cut out at about 5kW.
Yes, batteries were charged (not low battery).
The other units in the system are 2 x 3kVA MP-II in master/slave.
He has some high load equipment in his workshop that wouldn’t run - it usually does.
Batteries are 20kWh of BYD on the 10kVA, and ~1200Ah x 24V OPzV on the smaller units.
Q. Is this reduced power normal for inverters running Microgrid firmware?
Microgrids are complex, so far the queries we have received are people incorrectly configuring them, having installation errors or not following the strict requirements.
Due to the complexity of these configurations, it is really not something that can be supported over the intermet, so we’re asking people to follow official support channels.
If the person has not rewired and has just loaded on firmware on an existing system that is not the way. Obviously im throwing ideas into the void but already these are the common mistakes all the DIY groups are doing.
Echoing this. Its new in the market, most of the community won’t have experience.
Thanks for your responses.
I’m waiting to get a chance to talk with him to get back to you regarding the questions you put in your first response however I can confirm 100% that when I say ‘output capacity of the individual inverters’, I’m talking about the output seen on AC-In.
Nothing is connected to AC-Out on any of the inverters - as per Guy’s training video etc.
Ok did you also note you have to stay in the VA rating of the inverter?
So for pumps and things on the output where you have the peak power available and power assist you actually no longer have that with the microgrid?
So now you have to factor in both active and reactive power and leave headroom etc. it much more complicated system sizing with complex high start up loads such as those in a workshop.