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Differential Flatness Control Strategy for Grid-connected Inverter Based on Virtual Synchronous Generator Control
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Ziyang LI  Member, CPSS, Hongxi WANG, Pu WANG, Yongchen WANG
Journal of Power Supply | 2025, 23(6) : 123 - 131
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Journal of Power Supply | 2025, 23(6): 123-131
• DC-AC Inverters •
Differential Flatness Control Strategy for Grid-connected Inverter Based on Virtual Synchronous Generator Control
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Ziyang LI  Member, CPSS, Hongxi WANG, Pu WANG, Yongchen WANG
Affiliations
  • College of Electrical and Information Engineering, Beihua University, Jilin 132000, China
Published: 2025-10-30 doi: 10.13234/j.issn.2095-2805.2025.6.123
Outline
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To solve the problems of slow dynamic response speed and poor robustness in the conventional voltage and current dual-closed-loop control for grid-connected inverters based on virtual synchronous generator (VSG) control, a novel dual-closed-loop control strategy for VSG based on the differential flatness theory was proposed. First, a mathematical model under the dq coordinate axis was established according to the topology of a three-phase grid-connected inverter, and the flatness of the system was proved based on the differential flatness theory. Second, a voltage and current differential flatness controller including feedforward reference locus and error feedback compensation was designed. Finally, a simulation model of the system was constructed in MATLAB/Simulink. Simulation results show that the proposed control strategy improves the dynamic response speed and robustness of the VSG-based grid-connected inverter under the operating conditions of power disturbance and three-phase short-circuit fault of the grid, thereby verifying the effectiveness and feasibility of the differential flatness control strategy when it is applied to VSG.

Virtual synchronous generator (VSG)  /  differential flatness  /  dynamic property  /  robustness
李子阳中国电源学会会员, 王洪希, 王璞, 王永琛. 虚拟同步发电机并网逆变器微分平坦控制策略. 电源学报, 2025 , 23 (6) : 123 -131 . DOI: 10.13234/j.issn.2095-2805.2025.6.123
Ziyang LI, Hongxi WANG, Pu WANG, Yongchen WANG. Differential Flatness Control Strategy for Grid-connected Inverter Based on Virtual Synchronous Generator Control[J]. Journal of Power Supply, 2025 , 23 (6) : 123 -131 . DOI: 10.13234/j.issn.2095-2805.2025.6.123
Funding
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  • Science and Technology Research Project of Education Department of Jilin Province(JJKH20230063KJ)
  • Graduate Student Innovation Program of Beihua University(2022045)
Appendix
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Year 2025 volume 23 Issue 6
54
5
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.6.123
  • Receive Date：2023-02-06
  • Online Date：2026-10-26
  • Published：2025-10-30
Article Data
Affiliations
History
  • Received：2023-02-06
  • Revised：2023-04-17
  • Accepted：2023-07-27
Funding
Science and Technology Research Project of Education Department of Jilin Province(JJKH20230063KJ)
Graduate Student Innovation Program of Beihua University(2022045)
Affiliations
    College of Electrical and Information Engineering, Beihua University, Jilin 132000, China
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