I am having a little difficulty following this thread.

I believe that you may be using the wrong terminology.

A Converter is a device that takes AC power and converts it to DC mainly for charging batteries.

An Inverter is a device that takes DC power and converts it to AC mainly for use either from batteries or solar cells to supply AC to the house and/or the grid.

If I understand what it is that you are attempting to do, then it is to use your grid tied system to supply power to your home when the grid is down. For that, you would need some solar tracker/chargers an inverter/charger (converter) and some batteries to reference the system. Your current system was not designed to do that and would require some major upgrades in order to accomplish what you want. It is possible to take your solar panel DC and run it to solar tracker/chargers and then to an inverter by way of batteries, but that would be adding a whole new system.

As an example, we have 6KW of solar panels in two segments, 3KW each. Each segment has its own tracker/charger. The common part of the system is a battery bank of 48 Volt AGMs rated at 10 KWH. The solar power is dumped into them. The inverter is also tied to the battery bank as well and it supplies the house with AC, 230 Volts up to 6 KW continuous and 12 KW peak for up to 20 seconds. It has the ability to grid tie if we had extra solar power being generated (which we do not) and had jumped through all the hoops required by our utility company (Edison). It does have grid support however, which means it uses the solar generated power first, then draws the remainder from the grid. It also has auto switching between grid, batteries and a 6 KW Diesel generator, which also has a self starting module all connected to the other modules by a communication bus.

When the grid goes down, it instantly switches to the inverter, drawing power from the batteries. If the grid comes back up after only a few minutes, it then matches the grid frequency and phase and once it determines the grid is stable, switches back to the grid. If the grid remains off for an extended period of time the battery voltage slowly reduces and at a preset battery voltage the generator is started. Once the generator is stable the inverter then matches the generator voltage and phase and switches over to the generator. Once the grid is back up and stable, the inverter switches back to it, allows the generator to cool down before shutting it off.

All of this is transparent and only by checking the logs would one know that there was a minor grid interruption. If the generator comes on and can be heard from inside the residence, only then would you be aware that the grid has been down for more than a few minutes. The system we have is made by Xantrex.

Also, dead_sled, please change your avatar icon to something that does not flash. Some folks, like myself, are very sensitive to that flashing making it difficult to read what you have written.

Oliver