  Future power systems will include high shares of inverter-based generation.
There is a general consensus that for allowing this transition, the
Grid-Forming (GFM) control approach would be of great value. This article
presents a GFM control strategy which is based on the concept of an Emulated
Synchronous Condenser in parallel with a controlled current source with an
explicit representation of the swing equation. The advantage of this control is
that it can cope with challenging grid code requirements such as severe phase
jumps, balanced and unbalanced Fault Ride-Through (FRT), main grid
disconnection and black start. All these scenarios can be surpassed with a
single control structure with no further logic involved (e.g. fault detection
to turn on or off different control parts, freezes, etc.). The proposed
strategy is evaluated via time-domain simulations of a 2-MW Battery Energy
Storage System (BESS).
