An Unbalanced Voltage Compensation Strategy for Islanded Microgrids by using Fuzzy Logic Controller |
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BibTeX: |
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@article{IJIRSTV4I5006, |
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Abstract: |
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In this paper, a control technique with low bandwidth transmission correspondences for paralleled three-phase inverters is proposed to accomplish palatable voltage unbalance compensation. The proposed control calculation principally comprises of voltage/current impedance loop controllers, a droop controller, a particular virtual impedance loop, and an unbalance compensator. The inward circle controllers depend on the stationary reference frame to better alleviate the voltage mutilation under nonlinear loads. Droop control and particular virtual impedance loop accomplish exact current-sharing when supplying both linear and nonlinear loads. In addition, by altering voltage references concurring to the adequacy of the negative sequence voltage, the unbalance component, which is for the most part created by single phase generators/loads, can be alleviated to an extreme low value. At last, an AC microgrid which incorporates three-phase three-leg inverters was tried to accept the proposed control technique. |
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Keywords: |
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Microgrids, voltage unbalance compensation, virtual impedance, droop control |
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