A fuzzy logic-based droop control for simultaneous voltage and frequency regulation in an AC microgrid |
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| Affiliation: | 1. Department of Electrical and Computer Engineering, University of Kurdistan, Sanandaj, PO Box 416, Kurdistan, Iran;2. Iranian Oil Pipelines and Telecommunication Company (IOPTC), Kermanshah, Iran;1. Automatic Control Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL) STI SGM-GE, ME C2 397 (Batiment ME), Station 9, CH-1015 Lausanne, Switzerland;2. Department of Electrical Engineering, Ecole Polytechnique de Montréal, Montréal, Canada;1. Department of Electrical Engineering, Faculty of Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran;2. Department of Electrical Engineering, Faculty of Engineering, Razi University, Kermanshah, Iran;1. Department of Electrical & Electronics Engineering, Birla Institute of Technology, Mesra, Ranchi, India;2. Department of Electrical Engineering and Automation, AALTO University, Finland |
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| Abstract: | Modern power systems require increasing intelligence and flexibility in the control and optimization to ensure the capability of maintaining balance between generation and load under violent disturbances. There are several inverter interfaced distributed generations (IIDGs) with local and global control loops in a microgrid (MG). Voltage and frequency of MGs are strongly impressionable from the active and reactive load fluctuations. A change in load leads to imbalance between generation and consumption. The output voltage and frequency of the IIDGs are primarily controlled by the droop characteristics. But, in case of severe changes in load, the IIDGs may be failed and the MG is collapsed. In this paper, for optimally tuning of a generalized droop control (GDC) structure and also secondary voltage and frequency controllers, the fuzzy logic technique is utilized. It is shown that the proposed fuzzy logic controller exhibits high performance and desirable response for different scenarios of change in load. |
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| Keywords: | DG Microgrid Fuzzy logic Secondary frequency/voltage control Generalized droop control |
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