Multiple MPPT in parallel - how does that operate

Q&A and troubleshooting
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1

Hello,

I am working on a schematic where the customer has installed 3 MPPT 100/30 in parallel feeding the same positive busbar. So they are at the same potential on output. How is that affecting the global efficiency of the system ?
My understanding is that if one array has a higher output, it will block the two others (limited mode).
That is also what can be observed when the circuit voltage is driven by generator or alternator.
Is there a way to make the 3 systems to combine their output ?

2

There is absolutely nothing wrong with parallel chargers or mppt’s. No negative symptons in any way.

3

Use a Cerbo-like device and activate DVCC.
That will distribute the load/currents among MPPTs equally.

4

Or save the money and MAYBE reap 3% less