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Virtual DC Machine Control of DC Microgrid Energy Storage DC-DC Converter
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Junrui WANG, Bingchao BAI  Member, CPSS, Dongqi ZHAO, Xuanjing QIAO, Xuqiang ZHU, Shuai DOU
Journal of Power Supply | 2026, 24(1) : 136 - 145
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Journal of Power Supply | 2026, 24(1): 136-145
• Renewable Energy Generation and Energy Storage •
Virtual DC Machine Control of DC Microgrid Energy Storage DC-DC Converter
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Junrui WANG, Bingchao BAI  Member, CPSS, Dongqi ZHAO, Xuanjing QIAO, Xuqiang ZHU, Shuai DOU
Affiliations
  • School of Electrical and Information Engineering, North Minzu University, Yinchuan 750000, China
Published: 2026-01-30 doi: 10.13234/j.issn.2095-2805.2026.1.136
Outline
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Aimed at the problem of insufficient inertia and damping of a microgrid resulting from a large number of power electronic converters connected to power grid, a virtual DC machine enhanced inertia control strategy suitable for DC microgrid is proposed. First, based on the frequency division control of the hybrid energy storage unit, the virtual DC machine technology is introduced to control the energy storage converter. Second, according to the instantaneous power balance characteristics of DC microgrid, the fluctuation of load or photovoltaic output controlled by first-order high-pass filtering is taken as an additional amount of rated power controlled by the conventional virtual DC machine. Third, a regulation factor related to the auxiliary voltage regulation power and the state-of-charge of the supercapacitor is introduced to adaptively optimize its working state. Finally, the control strategy was verified by constructing an experimental platform, and results show that this strategy can improve the transient stability of DC bus voltage.

DC microgrid  /  virtual DC machine  /  enhanced inertia  /  state-of-charge
王君瑞, 白冰超中国电源学会会员, 赵东琦, 乔煊景, 朱旭强, 豆帅. 直流微网储能DC-DC变换器的虚拟直流电机控制. 电源学报, 2026 , 24 (1) : 136 -145 . DOI: 10.13234/j.issn.2095-2805.2026.1.136
Junrui WANG, Bingchao BAI, Dongqi ZHAO, Xuanjing QIAO, Xuqiang ZHU, Shuai DOU. Virtual DC Machine Control of DC Microgrid Energy Storage DC-DC Converter[J]. Journal of Power Supply, 2026 , 24 (1) : 136 -145 . DOI: 10.13234/j.issn.2095-2805.2026.1.136
Funding
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  • National Natural Science Foundation of China(52167004)
  • Ningxia Hui Autonomous Region Intelligent Equipment and Precision Detection Technology Research and Application Innovation Team(2022BSB03104)
  • North Minzu University Innovation Project(YCX23125)
Appendix
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Year 2026 volume 24 Issue 1
44
4
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.1.136
  • Receive Date：2023-07-17
  • Online Date：2026-10-26
  • Published：2026-01-30
Article Data
Affiliations
History
  • Received：2023-07-17
  • Revised：2023-09-19
  • Accepted：2023-09-22
Funding
National Natural Science Foundation of China(52167004)
Ningxia Hui Autonomous Region Intelligent Equipment and Precision Detection Technology Research and Application Innovation Team(2022BSB03104)
North Minzu University Innovation Project(YCX23125)
Affiliations
    School of Electrical and Information Engineering, North Minzu University, Yinchuan 750000, China
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