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Gain Scheduling Control of an Islanded Microgrid Voltage

Author

Listed:
  • Haritza Camblong

    (Department of Systems Engineering & Control, University of the Basque Country (UPV/EHU), Europa Plaza 1, E-20018 Donostia, Spain)

  • Aitor Etxeberria

    (Department of Systems Engineering & Control, University of the Basque Country (UPV/EHU), Europa Plaza 1, E-20018 Donostia, Spain
    Research Division of Ecole Supérieure des Technologies Industrielles Avancées (ESTIA), Technopole Izarbel, 64210 Bidart, France)

  • Juanjo Ugartemendia

    (Department of Electrical Engineering, University of the Basque Country (UPV/EHU), Europa Plaza 1, E-20018 Donostia, Spain)

  • Octavian Curea

    (Research Division of Ecole Supérieure des Technologies Industrielles Avancées (ESTIA), Technopole Izarbel, 64210 Bidart, France)

Abstract

The aim of this research study has been to design a gain scheduling (GS) digital controller in order to control the voltage of an islanded microgrid in the presence of fast varying loads (FVLs), and to compare it to a robust controller. The inverter which feeds the microgrid is connected to it through an inductance-capacitor-inductance (LCL) filter. The oscillatory and nonlinear behaviour of the plant is analyzed in the whole operating zone. Afterwards, the design of the controllers which contain two loops in cascade are described. The first loop concerns the current control, while the second is linked to the voltage regulation. Two controllers, one defined as Robust and another one as GS controller, are designed for the two loops, emphasizing in their robustness and their ability to damp the oscillatory plant behaviour. To finish, some simulations are carried out to study and compare the two kinds of controllers in different operating points. The results show that both controllers damp the oscillatory behaviour of the plant in closed loop (CL), and that the GS controller ensures a better rejection of current disturbances from FVLs.

Suggested Citation

  • Haritza Camblong & Aitor Etxeberria & Juanjo Ugartemendia & Octavian Curea, 2014. "Gain Scheduling Control of an Islanded Microgrid Voltage," Energies, MDPI, vol. 7(7), pages 1-21, July.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:7:p:4498-4518:d:38118
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    References listed on IDEAS

    as
    1. Mingchao Xia & Xiaoliang Li, 2013. "Design and Implementation of a High Quality Power Supply Scheme for Distributed Generation in a Micro-Grid," Energies, MDPI, vol. 6(9), pages 1-21, September.
    2. Tine L. Vandoorn & Jeroen D. M. De Kooning & Jan Van de Vyver & Lieven Vandevelde, 2013. "Three-Phase Primary Control for Unbalance Sharing between Distributed Generation Units in a Microgrid," Energies, MDPI, vol. 6(12), pages 1-22, December.
    3. Wei Gu & Wei Liu & Zhi Wu & Bo Zhao & Wu Chen, 2013. "Cooperative Control to Enhance the Frequency Stability of Islanded Microgrids with DFIG-SMES," Energies, MDPI, vol. 6(8), pages 1-21, August.
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    Cited by:

    1. Hua Han & Lang Li & Lina Wang & Mei Su & Yue Zhao & Josep M. Guerrero, 2017. "A Novel Decentralized Economic Operation in Islanded AC Microgrids," Energies, MDPI, vol. 10(6), pages 1-18, June.
    2. Baudoin, Sylvain & Vechiu, Ionel & Camblong, Haritza & Vinassa, Jean-Michel & Barelli, Linda, 2016. "Sizing and control of a Solid Oxide Fuel Cell/Gas microTurbine hybrid power system using a unique inverter for rural microgrid integration," Applied Energy, Elsevier, vol. 176(C), pages 272-281.
    3. Zhang, Jingrui & Wu, Yihong & Guo, Yiran & Wang, Bo & Wang, Hengyue & Liu, Houde, 2016. "A hybrid harmony search algorithm with differential evolution for day-ahead scheduling problem of a microgrid with consideration of power flow constraints," Applied Energy, Elsevier, vol. 183(C), pages 791-804.

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