Rule-Based Controller Design for Frequency Control in Islanded Microgrids

This paper presents a Cohen-Coon rule-based controller designed for frequency regulation in islanded microgrids, crucial for maintaining stability during grid disconnections. The microgrid integrates diverse renewable and conventional energy sources, including PV panels, wind turbines, and biodiesel generators, alongside energy storage systems. The study focuses on transforming the microgrid's higher-order model into a simplified first-order plus dead time model and optimizing controller tuning using the Cohen-Coon method. Real-time simulations on Opal-RT validate the controller's performance under varying load conditions and intermittent renewable energy inputs. Results demonstrate the controller's effectiveness in minimizing frequency deviations, affirming its robustness for ensuring stable power supply in dynamic microgrid environments.