With the large-scale integration of renewable energy sources such as wind power

power system strength and inertia have become increasingly variable and complex

challenging conventional grid-following (GFL)/grid-forming (GFM) control approaches. This paper proposes an adaptive GFL-GFM hybrid control strategy for PMSG-based wind turbines in response to variations in short-circuit ratio (SCR) and inertia. First

a coordinated wind power control strategy of machine-side and grid-side converters is designed based on a synchronized hybrid framework with a hybrid coefficient expression with SCR and inertia ratio as criteria. Second

active power-frequency and reactive power-voltage dynamic response models for the hybrid control are established to analyze parametric influences and power support capabilities. Finally

electromagnetic transient simulations verify the effectiveness of the proposed control strategy. Results show that the hybrid control strategy allows the wind turbine to adaptively adjust its GFL-GFM characteristics and reserve capacity according to SCR and inertia

achieving wide SCR operation

active power support

and a stability-economy balance under complex operating conditions.