Survey of Control Methods for Grid-Forming Inverters – Advancements from 2020 to 2023

This survey explores the advancements made in the control methods for grid-forming (GFM) inverters during the period from 2020 to 2023. Grid-forming inverters play a crucial role in the enhancement of power grid resilience, availability, controllability. This survey explores the recent developments in control approaches of the grid-forming inverters for linear and nonlinear controls, synchronization, and frequency restoration, highlighting the innovative techniques and strategies that have emerged within this timeframe. By examining the cutting-edge research and advancements, this survey aims to provide valuable insights into the state-of-the-art control methods employed in grid-forming inverters, fostering a deeper understanding of their potential impact on the future of networked power grids.