Inverter Mode - SMA SUNNY ISLAND 4548-US Operating Manual

23 Glossary SMA Solar Technology America LLC

Inverter mode

Operating mode of a battery inverter where it supplies the stand-alone grid from the battery energy.
In this operating mode, the battery inverter is especially responsible for the control of frequency and
voltage in the stand-alone grid.
Central inverter
An inverter concept in which all PV modules are connected to each other (in series and/or parallel)
and which uses a single inverter for feeding energy into the utility grid. The low cost of the inverter is
usually offset by the much higher installation efforts required and possible yield losses due to
variations in shading of different PV modules.
240 SI4548-6048-US-BE-en-21 Operating Manual