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A Novel Control Strategy Based on -VSG for Inter-Face Converter in Hybrid Microgrid

by Kai Shi, Dongyang Yang*

Department of Electrical Engineering, Jiangsu University, Zhenjiang, 21200, China

* Corresponding Author: Dongyang Yang. Email: email

Energy Engineering 2025, 122(2), 471-492. https://doi.org/10.32604/ee.2025.059651

Abstract

The rapid development of new energy power generation technology and the transformation of power electronics in the core equipment of source-grid-load drives the power system towards the “double-high” development pattern of “high proportion of renewable energy” and “high proportion of power electronic equipment”. To enhance the transient performance of AC/DC hybrid microgrid (HMG) in the context of “double-high,” a type virtual synchronous generator (-VSG) control strategy is applied to bidirectional interface converter (BIC) to address the issues of lacking inertia and poor disturbance immunity caused by the high penetration rate of power electronic equipment and new energy. Firstly, the virtual synchronous generator mechanical motion equations and virtual capacitance equations are used to introduce the virtual inertia control equations that consider the transient performance of HMG; based on the equations, the -type equivalent control model of the BIC is established. Next, the inertia power is actively transferred through the BIC according to the load fluctuation to compensate for the system’s inertia deficit. Secondly, the -VSG control utilizes small-signal analysis to investigate how the fundamental parameters affect the overall stability of the HMG and incorporates power step response curves to reveal the relationship between the control’s virtual parameters and transient performance. Finally, the PSCAD/EMTDC simulation results show that the -VSG control effectively improves the immunity of AC frequency and DC voltage in the HMG system under the load fluctuation condition, increases the stability of the HMG system and satisfies the power-sharing control objective between the AC and DC subgrids.

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APA Style
Shi, K., Yang, D. (2025). A novel control strategy based on -VSG for inter-face converter in hybrid microgrid. Energy Engineering, 122(2), 471–492. https://doi.org/10.32604/ee.2025.059651
Vancouver Style
Shi K, Yang D. A novel control strategy based on -VSG for inter-face converter in hybrid microgrid. Energ Eng. 2025;122(2):471–492. https://doi.org/10.32604/ee.2025.059651
IEEE Style
K. Shi and D. Yang, “A Novel Control Strategy Based on -VSG for Inter-Face Converter in Hybrid Microgrid,” Energ. Eng., vol. 122, no. 2, pp. 471–492, 2025. https://doi.org/10.32604/ee.2025.059651



cc Copyright © 2025 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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