AC Coupled: EG4 18kpv with IQ7 Microinverters routed through EG4's generator input

[the.shining]

I'm planning on building the below system: a hybrid eg4 18kpv collecting pv from 2 arrays....plus a 3rd array of IQ7 microinverters coming in on the generator input.

System Design
This system is designed to exhaust the microinverters during peak hours, then use the other 2 arrays coming in to the hybrid, then use the batteries, and lastly rely on the grid to handle any additional load.

Questions:
- Can the EG4 18kpv prevent export to grid? (given that microinverters are feeding the generator input)
- Because this is a grid-tied system, frequency shifting can't be implemented by the EG4 18kpv to control the microinverter's pv production. Would the EG4 18kpv have some other mechanism of controlling or shutting off the microinverter's pv production (Relay Control)?

 

[DIYrich]

When grid is connected, it should be able to disconnect the gen input to stop ac pv.


when grid down, assuming the 18kpv is like the sol-ark 15k:

Dc pv should be > ac pv.
The inverter can disconnect the gen input port to stop ac pv production. It needs the dc pv to immediately replace the ac pv.