2025/11/07 by Bernal, Rodrigo, Ponce, Ignacio, Milano, Federico
Engineering · #Control and Stability of Dynamical Systems #FOS: Electrical engineering #Microgrid Control and Optimization #Power System Optimization and Stability #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · doi:10.48550/arxiv.2511.05391
openalex publication_date 2025/11/07 · openalex created_date 2025/12/05 · openalex updated_date 2026/07/28
This paper proposes a coherency control strategy for Inverter-Based Resources (IBRs) to establish coherence among power system devices. Using the equivalence of the Complex Frequency (CF) of the injected currents as the definition for coherency among devices, the control enforces an output current with a proportional magnitude and a constant phase shift relative to a reference. This formulation makes the control technology-agnostic, enabling coherency with any type of resource. Case studies based on the two-area and IEEE 39-bus systems demonstrate the controller's potential to improve damping and overall dynamic behavior. The paper further evaluates practical implementation aspects including delay/noise sensitivity and the trade-off between oscillation mitigation and disturbance propagation. This work establishes coherency as a viable direct control objective for IBRs in modern power systems.