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Hello
I have a system that is un-centralized with same battery bank and it supplies power to different areas as the system comprise of two multiplus 5000VA, two Quattro 10000VA and one Quattro 5000VA. Battery bank is 75KWH MG batteries @7.5Kwh 10 pieces. I experience a problem of power outage due to battery temperature on the Master LV BMS. Can I get a suitable solution on this system
It is not supported to run multiple independent inverters off a common bank, so you're going to struggle to find support.
With that number of systems (35kVA) all trying to charge/discharge in an uncoordinated way, it isn't a surprise the battery is overheating - that is a great way to damage it.
Are these 24V batteries in a 2 x 5 configuration?
What is the DCL/CCL for the pack?
Have you any charts that show what the loads are on the battery and how it compares to specs?
Are all inverters allowed to charge or have you set any to inverter only?
If I have the right battery specs the recommended discharge is 60A per pack, so 300A for 10 (assuming 2 series, 5 parallel) at 48V. That is way under the total rating of your inverters.
Some more detail would be helpful but there may not be easy answers with such an eclectic setup.
it is a 48 system and single battery of MG has 25.2V they are connected 2S 3P on one BMS and the second BMS is connected 2S2P
All inverter are allowed to charge as each inverter charging current is limited to 50A therefore they make a sum of 250A and DVCC is on and charge limit is set 300A
DCL 1200A for two BMS @ 600A
