Pre-synchronization Control Strategy of Wind-Storage System Based on Dynamic Virtual Inertia and Fuzzy Adaptive Damping Control

Randomness and volatility of distributed power supply lead to frequent off-grid mode switching problems in grid port converters. The current off-grid control strategy does not make full use of the flexible adjustment ability of converter damping and inertia, and the adjustment of damping and inertia parameters depends on the small signal model of the system. This paper presents a Pre-synchronization control approach for a grid-connected wind-storage system utilizing dynamic virtual inertia and damping fuzzy control techniques. Firstly, the wind-storage microgrid control strategy based on virtual synchronous generator is constructed. Then, the dynamic change strategy of inertia and the damping strategy based on fuzzy theory are introduced into the pre-synchronization control strategy. Finally, the simulation was developed using the Matlab/Simulink platform to validate the practicality and efficiency of the strategy being proposed.