首页|Distributed Secondary Control Based on Dynamic Diffusion Algorithm for Current Sharing and Average Voltage Regulation in DC Microgrids
Distributed Secondary Control Based on Dynamic Diffusion Algorithm for Current Sharing and Average Voltage Regulation in DC Microgrids
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This paper introduces a distributed secondary con-trol scheme for achieving current sharing and average voltage regulation objectives in a DC microgrid.The proposed scheme employs a dynamic diffusion algorithm(DDA)instead of the consensus algorithm to enable distributed communication among converters.To help understand DDA,the relation of DDA and other diffusion algorithms is discussed in detail and its superiority is shown by comparison with diffusion and con-sensus algorithms.Furthermore,considering the discrete nature and different sampling time of the digital controller and com-munication network,a z-domain model of the entire DC mi-crogrid is established.The influence of communication and sec-ondary control parameters on the system stability is investigat-ed.Based on the established model,the tolerable communica-tion rates are obtained.Real-time simulations conducted on the OPAL-RT platform validate the effectiveness of the proposed scheme,showcasing its advantages in terms of convergence speed and stability.
Cooperative controlDC microgriddiffusion algorithmdiscrete-time modelingdistributed secondary control
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