Adaptive Inertia and Damping Coordination (AIDC) Control for Grid-Forming VSG to Improve Transient Stability

Different from the conventional synchronous generator, virtual inertia and damping control parameters for inverter-based generator (VSG) provide more flexibility stable operation dynamic performance optimization. However, principle is still unclear regarding how to coordinate considering both frequency stability transient synchronization stability. In this paper, an Adaptive Inertia Damping Coordination (AIDC) strategy proposed grid-forming VSGs improve The AIDC adaptively adjusts coefficients based on real-time conditions of deviation its rate change (RoCoF). designed dynamically increase in accelerated area decrease decelerated are, coefficient enlarge positive effect during whole accelerated/decelerated process. addition, realized through practical arctan-function method with limited boundaries, which can assist engineers. effectiveness validated hardware-in-the-loop experiments.