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In order to offer a good power quality for end users in islanded microgrids, the power sharing between distributed generators (DGs) is the first challenge that must be ensured. In this paper, a droop control method based primary control for two parallel single-phase VSIs forming an islanded microgrid is presented. The proposed control consists of two DGs local controllers, where each controller includes...
This paper presents a multi-loop control strategy for parallel distributed generation (DG) units in standalone mode of operation. Indeed, an Adaptive Proportional plus Multi Resonant (Adaptive P+MR) controller is designed for the voltage control loop and a simple Proportional regulator is used for the inner current loop. The proposed frequency adaptive control structure is also prorogued to parallel...
Equal rating inverters operating with different power set points may experience circulating power during unpredictable cases such as faults on a heavy load site due to a large mismatch between load consumption and power generation. This momentarily circulating power increases the dc-link voltage of the inverter and exceeds the voltage limit, leading to inverter shutdown for safety purposes. To overcome...
This paper proposes a novel control strategy for harmonic current filtering in an inverter-based-islanded microgrid, to minimize harmonic propagation in the distribution network. In most of the reported works, the nonlinear load is shared among the distributed generation units by altering either the effective line impedance or the inverter output impedance. In the proposed control scheme, the DG,...
For a coordinated integration of the increasing amount of distributed generators in the distribution network, the microgrid has been presented. For the islanded operating condition of the microgrid, the conventional approaches for grid control are no longer applicable as the microgrid characteristics differ significantly from those of conventional power systems. Therefore, in this paper, the reactive...
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