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Investigation of Adaptive Droop Control Applied to Low-Voltage DC Microgrid

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  • Prudhvi Kumar Gorijeevaram Reddy

    (Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Chennai 603203, India)

  • Sattianadan Dasarathan

    (Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Chennai 603203, India)

  • Vijayakumar Krishnasamy

    (Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Chennai 603203, India)

Abstract

In a DC microgrid, droop control is the most common and widely used strategy for managing the power flow from sources to loads. Conventional droop control has some limitations such as poor voltage regulation and improper load sharing between converters during unequal source voltages, different cable resistances, and load variations. This paper addressed the limitations of conventional droop control by proposing a simple adaptive droop control technique. The proposed adaptive droop control method was designed based on mathematical calculations, adjusting the droop parameters accordingly. The primary objective of the proposed adaptive droop controller was to improve the performance of the low-voltage DC microgrid by maintaining proper load sharing, reduced circulating current, and better voltage regulation. The effectiveness of the proposed methodology was verified by conducting simulation and experimental studies.

Suggested Citation

  • Prudhvi Kumar Gorijeevaram Reddy & Sattianadan Dasarathan & Vijayakumar Krishnasamy, 2021. "Investigation of Adaptive Droop Control Applied to Low-Voltage DC Microgrid," Energies, MDPI, vol. 14(17), pages 1-20, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:17:p:5356-:d:624005
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    References listed on IDEAS

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    1. Basak, Prasenjit & Chowdhury, S. & Halder nee Dey, S. & Chowdhury, S.P., 2012. "A literature review on integration of distributed energy resources in the perspective of control, protection and stability of microgrid," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(8), pages 5545-5556.
    2. Patrao, Iván & Figueres, Emilio & Garcerá, Gabriel & González-Medina, Raúl, 2015. "Microgrid architectures for low voltage distributed generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 415-424.
    3. Planas, Estefanía & Andreu, Jon & Gárate, José Ignacio & Martínez de Alegría, Iñigo & Ibarra, Edorta, 2015. "AC and DC technology in microgrids: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 726-749.
    4. Muhammad Rashad & Uzair Raoof & Muhammad Ashraf & Bilal Ashfaq Ahmed, 2018. "Proportional Load Sharing and Stability of DC Microgrid with Distributed Architecture Using SM Controller," Mathematical Problems in Engineering, Hindawi, vol. 2018, pages 1-16, January.
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    Cited by:

    1. Yalin Liang & Yuyao He & Yun Niu, 2022. "Robust Errorless-Control-Targeted Technique Based on MPC for Microgrid with Uncertain Electric Vehicle Energy Storage Systems," Energies, MDPI, vol. 15(4), pages 1-23, February.
    2. Seung-Yong Lee & Jae-Jung Jung, 2022. "The Circulating Current Reduction Control Method for Asynchronous Carrier Phases of Parallel Connected Inverters," Energies, MDPI, vol. 15(5), pages 1-22, March.

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