Microinverters and storeage batteries?

[Flyback]

Hi,
If you have several solar panels, each with a microinverter, how can you set it up so that only the electricity produced from the solar panels goes into the storage battery (ie no electricity from the grid goes into the storeage battery)?

 

[Nigel Goodwin]

How could it?, an inverter is only one way - unless you added a charger to it, making it a UPS.

 

[Flyback]

Thanks, i mean assuming there is already a charger available to charge the battery from the mains. ie the battery already has a battery inverter/charger with it.

Also, may i ask, is there such thing as a module that contains all of a ...

1...charger for solar to battery
2....Inverter for battery to mains
3....inverter for solar to mains
4.....Solar MPPT optimiser
5...charger for mains to battery

...ie, all 5 in one unit?

 

[Lightium]

Look into off-grid solar.

 

[Lo_volt]

Tesla's PowerWall can be combined with microinverters. There is no direct communication between the PowerWall and the microinverters. The PowerWall uses grid frequency to control the inverters. They can turn them off by shifting the generated frequency out of the valid range at which point the inverter shuts down. It wouldn't surprise me if other backup battery manufacturers do the same.

 

[ahsrabrifat]

You can use a Smart Energy Meter for Source Detection.
Install a bidirectional energy meter (e.g., Victron Energy Meter, Eastron SDM, etc.) to measure power flow between grid, the inverter, and the load. The inverter uses this to decide: when you're generating solar power, when to charge batteries
and when to stop charging (e.g., at sunset).