Abstract
Due to high efficiency, reliability and power quality issues, DC microgrids (MGs) gain a lot of attentions among researchers. Accurate voltage regulation and current sharing are the main control goals in a DC MG which should be addressed. Therefore, a hierarchical control scheme with droop control-based primary level and distributed voltage and current control-based secondary level are implemented in this paper and simulated in the MATLAB/SIMULINK software. The studied DC MG includes four distributed generations (DGs) which two DGs are connected through boost converters and the two others are connected through buck converters. To validate the outperformance of the employed method, a white noise is considered in secondary controllers and the obtained results are compared with results from an available method.
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