[RE-wrenches] AC Couple Enphase microinverters to a SolarEdge Backup Interface Unit; any design insight?

[scot.arey at solarcentex.com]

We have a design challenge where we think the use of microinverters with a
SolarEdge Energy Hub and inverter might provide advantages. 

 

I can not find any literature nor FAQs on AC-coupling Enphase to the backed
up side of the SolarEdge Backup Interface Unit. Has anyone done it or can
point me to design rules?

Why you ask.I believe the SolarEdge new 11400 Energy Hub inverter and a LG
Prime 16 will provide higher backed up power and thus a larger critical load
panel. I can do this in a more compact space and at less cost than three
Encharge 10 batteries which would provide roughly the same peak backup
power. And you ask why not just use all SolarEdge.there is a separate metal
building with ample capacity electrical already run to it. By
interconnecting Enphase there, I can get more PV capacity beyond just the PV
with SolarEdge on the primary  building without a new trench/conduit for
separate DC runs from the separate building. The loads in the metal building
are on-demand only so in essence this building circuit becomes primarily as
PV/Enphase solar circuit (with proper utility disconnects added, of course).
It's this circuit that I'll want to AC-couple.

 

Any insight on AC-coupling of Enphase to SolarEdge and ratio of Ac-coupled
to overall SolarEdge capacity? Any recommendations if the IQ8 would offer
any advantages over the IQ7 here?

 

 

 



 

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