Work

Modeling for Oscillation Propagation With Frequency-Voltage Coupling Effect in Grid-Connected Virtual Synchronous Generator

Year: 2024

Type: article

Abstract: This letter proposes a modeling method for mechanism clarification on oscillation propagation in grid-forming virtual synchronous generator (GF-VSG) systems considering the frequency-voltage coupling effect. Specifically, the physical significance of oscillation propagation between frequency and voltage of VSG has been clarified by the proposed self-stability-loop-model and the induced-stability-loop-model. The proposed model and method can fill in the gap that conventional single-input-single-output system cannot identify this oscillation propagation phenomenon. It is also found that frequency oscillations are not always coupled with voltage oscillation especially when the oscillation propagation is suppressed. Finally, the modeling and analysis are validated by simulations and experiments.

Source: IEEE Transactions on Power Electronics

DOI: 10.1109/tpel.2024.3460757

Authors: Chang Li, Yaqian Yang, Yong Li, Yuxing Liu, Frede Blaabjerg

Institutions: Hefei University of Technology, Anhui Agricultural University, Anhui University of Science and Technology, Aalborg University

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funder: National Natural Science Foundation of China