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Solar Grid Battery Interactive
Grid Interactive Inverters provide a means of directly connecting DC renewable sources such as solar photovoltaic arrays and small wind turbines to the electricity grid. Grid connection ensures that all renewable energy generated can be utilised. Surplus electricity not used locally is exported through the grid to other electricity users. Batteries provide reliable power when the grid supply fails.
Systems with batteries can operate in one of several configurations:
Without local load input:
The inverter starts and synchronises to the grid when renewable input becomes available, and shuts down when renewables are too small to justify operation.
This is useful to interface a wind turbine to the grid, where the battery provides buffer storage against wind gusts and limits the maximum DC input.
With local load supplied from the grid during normal operation:
If the grid fails, the inverter disconnects and local load can be supplied from the battery.
With local load supplied from the grid and renewables during normal operation:
If the renewables exceed local load, excess power is exported. If they are less than the local load, the shortage will be supplied from the grid. If the grid fails, the inverter disconnects from the grid; local load can be suplied from the battery and from renewable input. The battery will discharge if renewables are less than local load, and will charge when they exceed local load.
|3 - 5 kW
|10 - 15 kW
|15 - 40 kW
Brochures for these products can be downloaded here.
Application notes for Solar Grid Battery Interactive inverters are available in PDF format.
Grid Battery Operation.pdf
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