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Advanced Distributed Cooperative Secondary Control of Islanded DC Microgrids

Author

Listed:
  • Anuoluwapo Aluko

    (Department of Electrical Power Engineering, Durban University of Technology, Durban 4001, South Africa)

  • Elutunji Buraimoh

    (Department of Electrical Power Engineering, Durban University of Technology, Durban 4001, South Africa)

  • Oluwafemi Emmanuel Oni

    (Department of Electrical Power Engineering, Durban University of Technology, Durban 4001, South Africa)

  • Innocent Ewean Davidson

    (Department of Electrical Power Engineering, Durban University of Technology, Durban 4001, South Africa)

Abstract

In an islanded DC microgrid with multiple distributed generators (DGs), the droop control is employed to realize proportional current sharing among the DGs in the microgrid. The action of the droop control causes a deviation in the DC bus voltage which is exacerbated by the line impedance between the DG and the DC bus. In this paper, an advanced distributed secondary control scheme is proposed to simultaneously achieve accurate voltage regulation and cooperative current sharing in the islanded DC microgrid system. The proposed distributed secondary controller is introduced in the cyber layer of the system, and each controller shares information with neighbouring controllers via a communication network. The distributed technique maintains the reliability of the overall system if some part of the communication link fails. The proposed controller uses the type-II fuzzy logic scheme to adaptively select the secondary control parameters for an improved response of the controller. The sufficient conditions to guarantee the stability of the proposed controller are derived using the Lyapunov method. Comprehensive tests under different operating scenarios are conducted to demonstrate the robustness of the proposed control scheme.

Suggested Citation

  • Anuoluwapo Aluko & Elutunji Buraimoh & Oluwafemi Emmanuel Oni & Innocent Ewean Davidson, 2022. "Advanced Distributed Cooperative Secondary Control of Islanded DC Microgrids," Energies, MDPI, vol. 15(11), pages 1-17, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:3988-:d:826551
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    References listed on IDEAS

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    1. Anuoluwapo Oluwatobiloba Aluko & David George Dorrell & Rudiren Pillay Carpanen & Evan E. Ojo, 2020. "Heuristic Optimization of Virtual Inertia Control in Grid-Connected Wind Energy Conversion Systems for Frequency Support in a Restructured Environment," Energies, MDPI, vol. 13(3), pages 1-28, January.
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    Citations

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    Cited by:

    1. Vitor Fernão Pires & Armando Pires & Armando Cordeiro, 2023. "DC Microgrids: Benefits, Architectures, Perspectives and Challenges," Energies, MDPI, vol. 16(3), pages 1-20, January.
    2. Adeniyi K. Onaolapo & Gulshan Sharma & Pitshou N. Bokoro & Anuoluwapo Aluko & Giovanni Pau, 2023. "A Distributed Control Scheme for Cyber-Physical DC Microgrid Systems," Energies, MDPI, vol. 16(15), pages 1-17, July.
    3. Salah Beni Hamed & Mouna Ben Hamed & Lassaad Sbita, 2022. "Robust Voltage Control of a Buck DC-DC Converter: A Sliding Mode Approach," Energies, MDPI, vol. 15(17), pages 1-21, August.
    4. Liu, Hanyou & Fan, Ailong & Li, Yongping & Bucknall, Richard & Chen, Li, 2024. "Hierarchical distributed MPC method for hybrid energy management: A case study of ship with variable operating conditions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 189(PA).
    5. Xiang Li & Zhenya Ji & Fengkun Yang & Zhenlan Dou & Chunyan Zhang & Liangliang Chen, 2022. "A Distributed Two-Level Control Strategy for DC Microgrid Considering Safety of Charging Equipment," Energies, MDPI, vol. 15(22), pages 1-20, November.
    6. Olanrewaju Lasabi & Andrew Swanson & Leigh Jarvis & Anuoluwapo Aluko, 2023. "Dynamic Distributed Collaborative Control for Equitable Current Distribution and Voltage Recovery in DC Microgrids," Energies, MDPI, vol. 16(18), pages 1-40, September.

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