Abstract
This paper develops a distributed cooperative control scheme for DC microgrids with time-varying coupling delays in noisy environments. The proposed distributed cooperative control, consisting of distributed primary control and secondary control, will regulate the voltage of microgrids to the desired values and through a sparse communication network with asymmetric communication delays and noise disturbances. Distributed cooperative controllers are designed into the secondary control stage for DC microgrids, in which manner the criteria for the stability analysis and delays boundedness to maintain the system stable are derived. With the proposed algorithms, control derivation of voltage produced during the primary control stage can be well remedied even if the communication delays and noise disturbances may exist. The effectiveness of the proposed control methodology is verified by the simulation of a DC microgrid system in MATLAB/SimPowerSystems.
Published Version
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