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Autonomous Load Current Sharing Control Strategy for Distributed DC Micro-sources Based on Active Frequency Injection and Line Impedance Compensation Control

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Abstract

Traditional droop control methods are difficult to achieve accurate and autonomous current sharing between micro-source converters in DC microgrid, due to the mismatch of line impedance and the existence of low-speed communication. In this paper, an autonomous current sharing control strategy based on active frequency injection and line impedance compensation is proposed. Firstly, an active frequency injection method is used for all supported voltage-source converters. Under the feedback mechanism of the reactive power and voltage, the accurate current sharing can be achieved, and the total equivalent droop coefficient of each converter would be approximately equal. On the basis, the line impedance compensation information of each converter can be obtained accurately. Then, the original droop control method, in which the droop coefficient is the obtained compensation value, is utilized to replace the injection method. Without introducing any communication, this method not only can ensure the accuracy of load current sharing, but also can effectively improve the large ripple problem caused by frequency injection method, and avoid the secondary bus voltage drop. The design process and stability of the controller are analyzed in detail. Finally, the feasibility and effectiveness of the proposed control strategy are verified by using the corresponding simulation model and HIL experimental platform.

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References

  1. Dragicevi T, Lu X, Vasquez JC, Guerrero JM (2016) DC microgrids - part I: A review of control strategies and stabilization techniques. IEEE Trans Power Electron 31(7):4876–4891

    Google Scholar 

  2. Buticchi G, Bozhko S, Liserre M et al (2019) On-board microgrids for the more electric aircraft - technology review. IEEE Trans Ind Electron 66(7):5588–5599

    Article  Google Scholar 

  3. Mancera JJC, Saenz JL, Lopez E et al (2022) Experimental analysis of the effects of supercapacitor banks in a renewable DC microgrid. Appl Energy 2022(38):118355

    Article  Google Scholar 

  4. Yuan Y, Wang J, Yan X, Shen B, Long T (2022) A review of multi-energy hybrid power system for ships. Renew Sustain Energy Rev 2020(132):110081

    Google Scholar 

  5. Xu L, Guerrero JM, Lashab A, Wei B et al (2022) A review of DC shipboard microgrids-part I: power architectures, energy storage, and power converters. IEEE Trans Power Electron 37(5):5155–5172

    Article  Google Scholar 

  6. Zhang Q, Zeng Y, Liu Y et al (2022) An improved distributed cooperative control strategy for multiple energy storages parallel in islanded DC microgrid”, IEEE. J. Emerg. Select. Top. Power Electron. 10(1):455–468

    Google Scholar 

  7. Fan B, Li Q, Wang W et al (2022) A novel droop control strategy of reactive power sharing based on adaptive virtual impedance in microgrids. IEEE Trans Ind Electron 69(11):11335–11347

    Article  Google Scholar 

  8. Wang Y, Wang C, Xu L et al (2019) Adjustable inertial response from the converter with adaptive droop control in DC grids. IEEE Trans Smart Grid 10(3):3198–3209

    Article  Google Scholar 

  9. Wu D, Tang F, Dragicevic T et al (2015) Coordinated control based on bus-signaling and virtual inertia for islanded DC microgrids. IEEE Trans Smart Grid 6(6):2627–2638

    Article  Google Scholar 

  10. Meng L, Luna A, Diaz ER et al (2016) Flexible system integration and advanced hierarchical control architectures in the microgrid research laboratory of aalborg university. IEEE Trans Ind Appl 52(2):1736–1749

    Google Scholar 

  11. Sahoo S, Mishra S (2019) A distributed finite-time secondary average voltage regulation and current sharing controller for DC microgrids. IEEE Trans Smart Grid 10(1):282–292

    Article  Google Scholar 

  12. Shi M, Chen X, Zhou J et al (2020) Distributed optimal control of energy storages in a DC microgrid with communication delay. IEEE Trans Smart Grid 11(3):2033–2042

    Article  Google Scholar 

  13. Bastos RF, Aguiar CR, Balogh A et al (2022) Power-sharing for dc microgrid with composite storage devices and voltage restoration without communication. Int J Electr Power Energy Syst 2022(138):107928

    Article  Google Scholar 

  14. Zhao B, Zhang X, Chen J (2012) Integrated microgrid laboratory system. IEEE Trans Power Syst 27(4):2175–2185

    Article  Google Scholar 

  15. Zhang Q, Zeng Y, Hu Y et al (2022) Droop-free distributed cooperative control framework for multisource parallel in seaport dc microgrid. IEEE Trans Smart Grid 13(6):4231–4244

    Article  Google Scholar 

  16. Wang C, Duan J, Fan B, Yang Q et al (2019) Decentralized high-performance control of DC microgrids. IEEE Trans Smart Grid 10(3):3355–3363

    Article  Google Scholar 

  17. Liu Y, Zhuang X, Zhang Q et al (2020) A novel droop control method based on virtual frequency in DC microgrid. Intn. J. Electr. Power Energy Syst. 2020(119):105946

    Article  Google Scholar 

  18. Shan S, Umanand L (2019) A novel fractional harmonic d-q domain based power line signaling technique for power converters in a microgrid. IEEE Trans Power Electr 34(11):11264–11277

    Article  Google Scholar 

  19. Kirakosyan A, El-Saadany EF, Moursi MSE, Al-Durra A (2020) Communication-free current sharing control strategy for DC microgrids and its application for AC/DC hybrid microgrids. IEEE Trans Power Syst 35(1):140–151

    Article  Google Scholar 

  20. Peyghami S, Davari P, Mokhtari H et al (2017) Synchronverter-enabled DC power sharing approach for LVDC microgrids. IEEE Trans Power Electr 32(10):8089–8099

    Article  Google Scholar 

  21. Peyghami S, Mokhtari H, Loh CP et al (2018) Distributed primary and secondary power sharing in a droop-controlled LVDC microgrid with merged AC and DC characteristics. IEEE Trans Smart Grid 9(3):2284–2294

    Article  Google Scholar 

  22. Peyghami S, Davari P, Mokhtari H, Blaabjerg F (2019) Decentralized droop control in DC microgrids based on a frequency injection approach. IEEE Trans Smart Grid 10(6):6782–6791

    Article  Google Scholar 

  23. Bevrani H, Shokoohi S (2013) An intelligent droop control for simultaneous voltage and frequency regulation in islanded microgrids. IEEE Trans Smart Grid 4(3):1505–1513

    Article  Google Scholar 

  24. Lu X, Sun K, Guerrero JM et al (2015) Double-quadrant state-of-charge-based droop control method for distributed energy storage systems in autonomous DC microgrids. IEEE Trans on Smart Grid 6(1):147–157

    Article  Google Scholar 

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Acknowledgements

This work was supported by National Natural Science Foundation of China (51979021) and the Fundamental Research Funds for the Central Universities (No. 3132023501 and No. 3132023621).

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Authors and Affiliations

  1. Marine Engineering College, Dalian Maritime University, Dalian, China

    Xuzhou Zhuang, Qinjin Zhang, Yuji Zeng, Yancheng Liu, Siyuan Liu & Heyang Yu

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  1. Xuzhou Zhuang
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  2. Qinjin Zhang
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  3. Yuji Zeng
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  4. Yancheng Liu
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  5. Siyuan Liu
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Correspondence to Qinjin Zhang.

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Zhuang, X., Zhang, Q., Zeng, Y. et al. Autonomous Load Current Sharing Control Strategy for Distributed DC Micro-sources Based on Active Frequency Injection and Line Impedance Compensation Control. J. Electr. Eng. Technol. 19, 2119–2133 (2024). https://doi.org/10.1007/s42835-023-01712-8

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  • DOI: https://doi.org/10.1007/s42835-023-01712-8

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