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Decentralized Virtual Impedance- Conventional Droop Control for Power Sharing for Inverter-Based Distributed Energy Resources of a Microgrid

Author

Listed:
  • Elutunji Buraimoh

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

  • Anuoluwapo O. Aluko

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

  • Oluwafemi E. Oni

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

  • Innocent E. Davidson

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

Abstract

The work presents the power-sharing in a standalone low voltage AC microgrid consisting of three parallel grid supporting inverters using a virtual impedance-based droop system. Typically, isolated microgrids suffer unique challenges regarding voltage, current, frequency regulation, power flow control, and power-sharing due to the absence of a stiff AC grid source. This work investigated the power flow and sharing technical challenges using three inverter-based distributed energy sources, three static loads, and one dynamic load. These distributed energy sources are interconnected with the loads using low voltage line impedance within the microgrid to implement the uneven power distribution. Furthermore, a distributed grid supporting control utilizing virtual impedance is proposed in this work to improve power-sharing. The microgrid model is developed with the MATLAB Simulink environment and validated using the Opal RT OP4510 simulator. The proposed technique ensured improved power-sharing and mitigated the effect of voltage drops introduced through a virtual impedance using combined positive and negative virtual.

Suggested Citation

  • Elutunji Buraimoh & Anuoluwapo O. Aluko & Oluwafemi E. Oni & Innocent E. Davidson, 2022. "Decentralized Virtual Impedance- Conventional Droop Control for Power Sharing for Inverter-Based Distributed Energy Resources of a Microgrid," Energies, MDPI, vol. 15(12), pages 1-16, June.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:12:p:4439-:d:841880
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    References listed on IDEAS

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    1. Elutunji Buraimoh & Innocent E. Davidson & Fernando Martinez-Rodrigo, 2019. "Fault Ride-Through Enhancement of Grid Supporting Inverter-Based Microgrid Using Delayed Signal Cancellation Algorithm Secondary Control," Energies, MDPI, vol. 12(20), pages 1-26, October.
    2. Woon-Gyu Lee & Thai-Thanh Nguyen & Hyeong-Jun Yoo & Hak-Man Kim, 2018. "Low-Voltage Ride-Through Operation of Grid-Connected Microgrid Using Consensus-Based Distributed Control," Energies, MDPI, vol. 11(11), pages 1-18, October.
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    Cited by:

    1. Md. Shafiul Alam & Abdullah A. Almehizia & Fahad Saleh Al-Ismail & Md. Alamgir Hossain & Muhammad Azharul Islam & Md. Shafiullah & Aasim Ullah, 2022. "Frequency Stabilization of AC Microgrid Clusters: An Efficient Fractional Order Supercapacitor Controller Approach," Energies, MDPI, vol. 15(14), pages 1-22, July.
    2. Mingshen Li & Jose Matas & Jorge El Mariachet & Carlos Gustavo C. Branco & Josep M. Guerrero, 2022. "A Fast Power Calculation Algorithm for Three-Phase Droop-Controlled-Inverters Using Combined SOGI Filters and Considering Nonlinear Loads," Energies, MDPI, vol. 15(19), pages 1-16, October.
    3. Emmanuel Hernández-Mayoral & Manuel Madrigal-Martínez & Jesús D. Mina-Antonio & Reynaldo Iracheta-Cortez & Jesús A. Enríquez-Santiago & Omar Rodríguez-Rivera & Gregorio Martínez-Reyes & Edwin Mendoza-, 2023. "A Comprehensive Review on Power-Quality Issues, Optimization Techniques, and Control Strategies of Microgrid Based on Renewable Energy Sources," Sustainability, MDPI, vol. 15(12), pages 1-53, June.
    4. Hussain A. Alhaiz & Ahmed S. Alsafran & Ali H. Almarhoon, 2023. "Single-Phase Microgrid Power Quality Enhancement Strategies: A Comprehensive Review," Energies, MDPI, vol. 16(14), pages 1-28, July.
    5. Yousef Asadi & Mohsen Eskandari & Milad Mansouri & Andrey V. Savkin & Erum Pathan, 2022. "Frequency and Voltage Control Techniques through Inverter-Interfaced Distributed Energy Resources in Microgrids: A Review," Energies, MDPI, vol. 15(22), pages 1-29, November.
    6. Jiawei Dong & Chunyang Gong & Jun Bao & Lihua Zhu & Yuanjun Hou & Zhixin Wang, 2022. "Secondary-Frequency and Voltage-Regulation Control of Multi-Parallel Inverter Microgrid System," Energies, MDPI, vol. 15(22), pages 1-25, November.

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