Single-Phase Photovoltaic Grid-Connected Generation System with Voltage Feedforward Control and Active Frequency Drift Islanding Detection
Simulink simulation model for a single-phase PV grid-connected system featuring voltage feedforward control and Active Frequency Drift (AFD) islanding detection method, achieving preliminary synchronization of grid current with grid voltage frequency and phase. The AFD detection algorithm is implemented using S-functions, with fundamental islanding detection functionality successfully demonstrated.