Åland microinversor off grid

Is a micro inverter a 'off-grid'?

They are not "off grid" micro inverters. They are regular micro inverters, connected to his off grid Garage. His system can AC couple. If I can do it, you can do it. What does it means "AC Coupling" exactly and what solution are exits?

Can I use a microinverter to supplement an off-grid system?

You can easily use microinverters to supplement an off-grid system. If you are connecting it to an AC coupling capable system. I have a cheap 300W gti plugged into mine. Just wanted to see if it works. Also means I'm running AC thru 30m of cable instead of DC. Less voltage drop and simplifies the wiring.

How do you Spoof a grid-tie inverter?

There are ways to 'spoof' a grid-tie inverter to generate power even when the grid is down (usually a big no-no) and this can be achieved either through AC or DC coupling into an off-grid system. DC coupling doesn't seem to me to be a good idea because you'd be converting DC-to-AC (microinverter) to DC-to-AC (off-grid inverter).

Are grid tie inverters supposed to stop anti-islanding when off-grid?

The grid-tie inverters are supposed to be told to stop that anti-islanding stuff when off-grid. I've run mine with some grid-tie inverters that aren't converted for off-grid or backup operation. So long as batteries need charge, the grid tie inverter produces all it can and Sunny Island charges its batteries.

How do I charge a victron microinverter in a blackout?

Multiplus II or Quattro. You can connect a 48V battery to it. Separate MPPTs to charge the battery. Also can charge from grid or your microinverters. It needs a box that separates your system from the grid in a blackout. Victron starts producing power and controls your microinverters production with phase shifting.

What happens if a GT inverter fails?

Large loads non-critical on the grid panel, zeroed out if possible from the PV but are simply without power if the grid fails. This is all or nothing on GT inverters, but is pretty much universal not dependent on a given manufacturer, as long as everyone obeys the GT specs.