Work

Power coupling modeling and analysis method of VSG control-based system for quantifying dynamic interaction

Year: 2026

Type: article

Abstract: In multi-VSG system, there are coupling between the power control loops and among the multiple VSGs, which may deteriorate the control performance and even pose risks to the system stable operation. However, there have been few studies on quantitative index and analysis of power coupling and the dynamic coupling among multiple VSGs. Thus, this paper proposes power coupling modeling and analysis method of VSG control-based system for quantifying dynamic coupling. The established [P Q]-[ω V] model, taking power, frequency and voltage amplitude as variables, is more convenient to characterize power coupling feature. Besides, a quantitative analysis based on relative gain matrix theory is presented to quantify the degree of power coupling and the coupling among multiple VSGs. Further, a modified decentralized damping control method is proposed to help power decoupling and suppress oscillation, which provide more control degree of freedom. Finally, the correctness of the proposed modeling and quantitative analysis method is validated by the control-hardware-in-loop experiment results.

Source: International Journal of Electrical Power & Energy Systems

DOI: 10.1016/j.ijepes.2026.111814

Authors: Siqi Fu, Xiaochao Hou, Feng Zhou, Yao Sun, Mei Su

Institutions: Changsha University, Central South University

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $3,920