To achieve global voltage regulation and current sharing with reduced communication demands while enhancing the transient voltage performance of DC microgrid(MG)clusters,this paper proposes a distributed cooperative c...To achieve global voltage regulation and current sharing with reduced communication demands while enhancing the transient voltage performance of DC microgrid(MG)clusters,this paper proposes a distributed cooperative control method featuring output constraints and a dynamic event-triggered average consensus algorithm.The proposed control strategy employs an integrated primary-secondary control structure,where a dynamic event-triggered robust average consensus algorithm(DET-RACA)-based average voltage observer is designed to estimate the average voltage of each distributed generator(DG)within the MG.This estimated average voltage is subsequently utilized to simultaneously achieve voltage regulation and precise current sharing within individual MGs.Furthermore,an outputconstrained voltage controller incorporating a barrier Lyapunov function is developed to ensure high-performance transient voltage regulation for each DG.At the tertiary control level,a DET-RACA-based current observer is implemented to acquire global current information across the MG cluster,enabling the adjustment of bus reference voltages for each MG and guaranteeing global current sharing.The distinctive feature of DETRACA lies in its event-triggering mechanism,which significantly reduces communication frequency across the network topology and effectively alleviates the communication burden of the MG cluster system.Comprehensive simulations under five different operating conditions demonstrate the effectiveness and feasibility of the proposed method for DC MG cluster control.展开更多
基金supported by Provincial Key Laboratory Performance Subsidy Project(22567612H).
文摘To achieve global voltage regulation and current sharing with reduced communication demands while enhancing the transient voltage performance of DC microgrid(MG)clusters,this paper proposes a distributed cooperative control method featuring output constraints and a dynamic event-triggered average consensus algorithm.The proposed control strategy employs an integrated primary-secondary control structure,where a dynamic event-triggered robust average consensus algorithm(DET-RACA)-based average voltage observer is designed to estimate the average voltage of each distributed generator(DG)within the MG.This estimated average voltage is subsequently utilized to simultaneously achieve voltage regulation and precise current sharing within individual MGs.Furthermore,an outputconstrained voltage controller incorporating a barrier Lyapunov function is developed to ensure high-performance transient voltage regulation for each DG.At the tertiary control level,a DET-RACA-based current observer is implemented to acquire global current information across the MG cluster,enabling the adjustment of bus reference voltages for each MG and guaranteeing global current sharing.The distinctive feature of DETRACA lies in its event-triggering mechanism,which significantly reduces communication frequency across the network topology and effectively alleviates the communication burden of the MG cluster system.Comprehensive simulations under five different operating conditions demonstrate the effectiveness and feasibility of the proposed method for DC MG cluster control.
