Distributed Event-Triggered Control for Hybrid AC/DC Microgrids with Quantized State

The hybrid AC/DC microgrid (MG) is an integrated system that combines AC and DC MGs, enabling the flexible integration of various renewable energy sources and AC/DC loads. Considering the actual limited communication bandwidth, distributed event-triggered secondary controllers with quantized state are designed for the hybrid AC/DC MG to ensure bus voltage regulation and current sharing in DC MG, as well as frequency recovery and active power sharing in AC MG. Additionally, an active power transmission strategy for the interlinking converter (ILC) in constant power mode is proposed to maintain energy balance between the AC and DC MG. Theoretical analysis and simulation test results have validated the effectiveness of the proposed control strategy.