Work

Parameterized small signal approach for identifying the admittance matrix of EVs for harmonic and supraharmonic propagation studies

Year: 2026

Type: article

Abstract: The growing penetration of power-electronic loads such as EVs in low-voltage networks motivates accurate models for harmonic and supraharmonic impact assessment. This paper proposes a parameterized framework for EV front-end converters in which a detailed Simulink switching model is used to identify the frequency coupling matrix (FCM) and the resulting frequency-dependent admittance. Based on a focused literature review, the FCM approach is adopted to capture cross-frequency, cross-sequence, and cross-phase interactions. The framework is applicable to both two-level VSC and three-level Vienna-type converters and their control strategies, enabling scalable frequency-domain propagation studies. A charging-hub case study demonstrates integration of the identified admittances into a network model, where disturbance propagation is quantified via controlled current injection and evaluation of the resulting nodal voltage spectra.

Source: Electric Power Systems Research

DOI: 10.1016/j.epsr.2026.112977

Authors: Manav Giri, Sarah Rönnberg

Institution: Luleå University of Technology

Language: English

Topic: Power Quality and Harmonics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $2,810