Control Strategy of Virtual Synchronous Generator Based on Adaptive Segmented Moment of Inertia

doi:10.3969/j.issn.1008-0198.2025.06.015

Abstract

Abstract: To address the contradiction between dynamic response and steady-state performance in traditional fixed moment of inertia strategies of virtual synchronous generators (VSG) and the power oscillation problems, a virtual synchronous generator control strategy based on adaptive segmented moment of inertia is proposed. By analyzing the oscillation mechanism, the inertia adjustment interval are dynamically divided. When power fluctuations are severe, the moment of inertia is reduced to improve control speed. When power fluctuations have a slowing trend, the moment of inertia is increased to improve stability. Through this optimized design, VSG exhibits good parameter robustness in various operating modes, effectively suppressing low-frequency oscillations of active power and improving the accuracy of transient process control. Finally, MATLAB/Simulink simulation verifies the feasibility and correctness of the proposed method.

Key words: virtual synchronous generator, moment of inertia, adaptive control, active low-frequency oscillation, transient stability

CLC Number:

TM341

SUN Chuanyong, SUN Hengyang, HUANG Zipeng, WANG Jikui, SUN Pengcheng. Control Strategy of Virtual Synchronous Generator Based on Adaptive Segmented Moment of Inertia[J]. Hunan Electric Power, 2025, 45(6): 114-119.

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