Work

Theoretical Examination of Small-Signal Impedance Models of Inverter-Based Resources

Year: 2025

Type: conference-paper

Abstract: Various impedance modeling methods have been developed in different reference frames for the impedance-based stability assessment (IBSA) of inverter-based resources (IBRs). In practice, these impedance models are extracted by applying electromagnetic transient (EMT)-type impedance scanning techniques to manufacturer specific (black-box) models of IBRs. However, the relationships between these models require a clearer and more comprehensible explanation. This work derives and systematically explains model equivalence through linear and coordinate transformations, as well as model simplification in the sequence multi-input multi-output (MIMO) to sequence singleinput single-output (SISO) impedance transformation. To validate the theoretical analysis, EMT-type impedance scanning is performed on a full-size converter (FSC)-based wind park (WP) in a benchmark test system exhibiting weak grid issues.

Source: IEEE International Conference on Compatibility, Power Electronics and Power Engineering

DOI: 10.1109/cpe-powereng63314.2025.11027190

Authors: Lei Meng, Ulas Karaagac, Ka Wing Chan, Mohsen Ghafouri, Jean Mahseredjian

Institutions: Hong Kong Polytechnic University, Middle East Technical University, Concordia University, Polytechnique Montréal

Language: English

Topic: Wind Turbine Control Systems

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

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

Open Access status: green

Funder: Mitacs