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Fuzzy PID Controller for Adaptive Current Sharing of Energy Storage System in DC Microgrid

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Intelligent Computing Methodologies (ICIC 2020)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 12465))

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Abstract

In DC microgrid, conventional droop control is widely used to perform current sharing of distributed energy storage system. Although, this method has distributed and reliable characteristic, it cannot achieve accurate current sharing due to mismatched line resistances. Moreover, thermal effect causes these line resistances to change over long-term operation, which makes unequal current sharing more seriously. To overcome this problem, adaptive virtual resistance is applied in order to achieve accurate current sharing among energy storage system in DC microgrid. The virtual resistance is regulated by means of a Fuzzy PID controller in this paper. Although Fuzzy controller is widely used in literature, it has not been realized for achieving accurate current sharing in DC MG. Thanks to Fuzzy PID controller, the dynamic response becomes faster and the stability of the microgrid system are improved in comparison with the conventional PID controller. The proposed method is validated through the simulation using Matlab and Simulink.

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Acknowledgements

This work was supported in part by the NRF of Korea Grant under Grant NRF-2018R1D1A1A09081779 and in part by the KETEP and the MOTIE under Grant 20194030202310.

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Authors and Affiliations

  1. Graduate School of Electrical Engineering, University of Ulsan, Ulsan, South Korea

    Duy-Long Nguyen

  2. School of Electrical Engineering, University of Ulsan, Ulsan, South Korea

    Hong-Hee Lee

Authors
  1. Duy-Long Nguyen
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  2. Hong-Hee Lee
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Corresponding author

Correspondence to Hong-Hee Lee .

Editor information

Editors and Affiliations

  1. Machine Learning and Systems Biology, Tongji University, Shanghai, China

    De-Shuang Huang

  2. School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, North Wollongong, NSW, Australia

    Prashan Premaratne

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Nguyen, DL., Lee, HH. (2020). Fuzzy PID Controller for Adaptive Current Sharing of Energy Storage System in DC Microgrid. In: Huang, DS., Premaratne, P. (eds) Intelligent Computing Methodologies. ICIC 2020. Lecture Notes in Computer Science(), vol 12465. Springer, Cham. https://doi.org/10.1007/978-3-030-60796-8_18

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  • DOI: https://doi.org/10.1007/978-3-030-60796-8_18

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-60795-1

  • Online ISBN: 978-3-030-60796-8

  • eBook Packages: Computer ScienceComputer Science (R0)

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