Good morning all. I see that a grid-forming inverter (GFMI) needs being supported by energy storage since in order to control voltage and frequency, the inverter will exchange power with the grid, requiring a fast response in some cases.
My question is whether this can be feasible when there is not a dedicated ESS unit in the site and the inverter relies only on the limited power that is stored in its DC-link. I mean when the GFMI is powered by a PV plant or a wind plant. I believe that in this case neither plant is able to maintain a constant DC voltage and hence the GFMI DC-link lacks the stiffness it would be provided with in case it was connected to a BESS for instance.
Please let me know your thoughts and if possible, kindly recommend a paper/book that could provide further information, specifically regarding references of GFMI operation without BESS.
Thanks in advance!
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