Abstract
This paper examines the impact of virtual impedance control in an inverter-dominated microgrid (MG) system. the goal is to provide a clear understanding of Virtual Impedance (VI) control toward MG stability. This analysis is performed by developing the system's Small-Signal Model (SSM) and studying the poles' trajectory change when the system's key control parameters are varied. the results indicate that VI will benefit system stability when considering MG with low X/R while negatively affecting MG with high X/R. Also, there is a trade-off between the coupling impedance of the inverter and the VI parameters, which needs to be considered when incorporating this control with existing grid-forming (GFM) controllers.
Recommended Citation
O. Oboreh-Snapps et al., "Small Signal Stability Analysis of Virtual Impedance Control in Islanded Microgrid," 2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023, pp. 1005 - 1011, Institute of Electrical and Electronics Engineers, Jan 2023.
The definitive version is available at https://doi.org/10.1109/ECCE53617.2023.10362700
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Grid Forming Inverter; Microgrids; Small Signal Model; Virtual Impedance
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jan 2023