Controller Functions; Grid-Forming Or Grid-Following - Deif ASC 150 Operator's Manual

2.4

Controller functions

2.4.1

Grid-forming or grid-following

Grid-forming
Grid-forming is also called island, V/f mode, or off-grid. In grid-forming, the battery can act as the only energy source. The battery
can provide the grid-forming power in island operation, and work together with non-grid-forming sources, like solar and wind.
Island operation with PV
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Grid-following
Grid-following is also called parallel, or P/Q mode. For grid-following, the battery is always connected to another grid-forming source,
like a mains or genset. You can use the battery to achieve optimal genset load, or maintain a minimum genset load.
Parallel operation with Mains
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OPERATOR'S MANUAL 4189341343A EN Page 10 of 36