Abstract
This paper presents the design, simulation and implementation of a dc microgrid based on quadrupler boost converter. The system performance is controlled using either a voltage droop or an adaptive droop technique in order to regulate the grid voltage and achieve proper load sharing among different sources. The quadrupler dc converter is selected as an interface converter due to its superior advantages over the other dc chopper converters. The system has been modelled in the Matlab/Simulink environment. Some aspects about centralized (master-slave) and decentralized (voltage droop) control strategies, are presented. Moreover, the controller design procedures are discussed. The effect of power sharing on converter's duty cycle, is mathematically derived. An experimental system has been built in laboratory. Comparison between simulation and measured results shows the applicability of the presented analysis.
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