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Autonomous Control Strategy of DC Microgrid for Islanding Mode Using Power Line Communication

Author

Listed:
  • Dong-Keun Jeong

    (Department of Electrical Engineering, Pusan National University, Pusan 46241, Korea
    Power Conversion and Control Research Center, HVDC Research Division, KERI, Changwon 51543, Korea)

  • Ho-Sung Kim

    (Power Conversion and Control Research Center, HVDC Research Division, KERI, Changwon 51543, Korea)

  • Ju-Won Baek

    (Power Conversion and Control Research Center, HVDC Research Division, KERI, Changwon 51543, Korea)

  • Hee-Je Kim

    (Department of Electrical Engineering, Pusan National University, Pusan 46241, Korea)

  • Jee-Hoon Jung

    (School of Electrical & Computer Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea)

Abstract

This paper proposes a DC-bus signaling (DBS) method for autonomous power management in a DC microgrid, used to improve its reliability. Centralized power management systems require communication between the power sources and loads. However, the DBS method operates based on the common DC-bus voltage and does not require communication. Based on the DC-bus voltage band, the DC-bus voltage can be used to inform the status of the DC-bus in various scenarios. The DC microgrid operates independently to maintain the system stably in the DC-bus voltage band. The DC microgrid can be divided into a grid-connected mode and an islanding mode. This paper proposes a control strategy based on power management of various independent components in islanding mode. In addition, the autonomous control method for switching the converter’s operation between grid-connected mode and islanding mode is proposed. A DC microgrid test bed consisting of a grid-connected AC/DC converter, a bidirectional DC/DC converter, a renewable energy simulator, DC home appliances and a DC-bus protector is used to test the proposed control strategy. The proposed autonomous control strategy is experimentally verified using the DC microgrid test bed.

Suggested Citation

  • Dong-Keun Jeong & Ho-Sung Kim & Ju-Won Baek & Hee-Je Kim & Jee-Hoon Jung, 2018. "Autonomous Control Strategy of DC Microgrid for Islanding Mode Using Power Line Communication," Energies, MDPI, vol. 11(4), pages 1-22, April.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:924-:d:140946
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    Citations

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    Cited by:

    1. Qinjin Zhang & Xuzhou Zhuang & Yancheng Liu & Chuan Wang & Haohao Guo, 2019. "A Novel Autonomous Current-Sharing Control Strategy for Multiple Paralleled DC–DC Converters in Islanded DC Microgrid," Energies, MDPI, vol. 12(20), pages 1-22, October.
    2. Min-Soo Kim & Do-Hyun Kim & Dong-Keun Jeong & Jang-Mok Kim & Hee-Je Kim, 2020. "Soft Start-Up Control Strategy for Dual Active Bridge Converter with a Supercapacitor," Energies, MDPI, vol. 13(16), pages 1-19, August.
    3. Ahmed Al Mansur & Md. Ruhul Amin & Kazi Khairul Islam, 2019. "Performance Comparison of Mismatch Power Loss Minimization Techniques in Series-Parallel PV Array Configurations," Energies, MDPI, vol. 12(5), pages 1-21, March.
    4. Thanh Van Nguyen & Kyeong-Hwa Kim, 2019. "Power Flow Control Strategy and Reliable DC-Link Voltage Restoration for DC Microgrid under Grid Fault Conditions," Sustainability, MDPI, vol. 11(14), pages 1-27, July.

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