VIRTUAL INERTIA CONTROL STRATEGY FOR ENERGY STORAGE CONVERTERS IN ISLANDED DC MICROGRIDS BASED ON RATE OF CHANGE OF VOLTAGE

Zhang Ruifang; Wang Guoling; Luo Chenghan; Cao Wensheng

doi:10.19912/j.0254-0096.tynxb.2024-0486

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (7) : 298-306. DOI: 10.19912/j.0254-0096.tynxb.2024-0486

Special Topics of Academic Papers at the 56th Annual Meeting of the China Association for Science and Technology

VIRTUAL INERTIA CONTROL STRATEGY FOR ENERGY STORAGE CONVERTERS IN ISLANDED DC MICROGRIDS BASED ON RATE OF CHANGE OF VOLTAGE

Zhang Ruifang¹, Wang Guoling¹, Luo Chenghan¹, Cao Wensheng²

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Abstract

Virtual inertia control method can effectively improve system inertia and guarantee bus voltage stability . In this paper, for the transient power oscillation caused by the interactions between the virtual inertia compensation loop and the control inner loop of the traditional virtual inertia control method, a virtual inertia control strategy based on the rate of change of voltage （VI-ROCOV） is proposed to further optimize the transient characteristics of the system through the improvement of the virtual damping characteristics of the system. By establishing a small-signal model of the system, the influence of key parameters on the stability and transient characteristics of the system is analyzed, and the parameter optimization design guidelines are obtained. Finally, an experimental model is established to compare and analyze the different control methods. The results show that the proposed control strategy effectively improves the transient performance of the system and ensures the bus voltage stability.

Key words

microgrids / DC-DC converters / transient stability / virtual inertia / battery storage / dynamic response

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Zhang Ruifang, Wang Guoling, Luo Chenghan, Cao Wensheng. VIRTUAL INERTIA CONTROL STRATEGY FOR ENERGY STORAGE CONVERTERS IN ISLANDED DC MICROGRIDS BASED ON RATE OF CHANGE OF VOLTAGE[J]. Acta Energiae Solaris Sinica. 2025, 46(7): 298-306 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0486

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