A Framework for Frequency Domain Analysis of Grid-Forming and Grid-Following Converters

Streit S, Raab A, Mehlmann G, Luther M (2025)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2025

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 2025 IEEE Kiel PowerTech, PowerTech 2025

Event location: Kiel, DEU DE

ISBN: 9798331543976

DOI: 10.1109/PowerTech59965.2025.11180628

Abstract

This paper presents an automated framework for frequency domain analysis of grid-forming and grid-following converters. The interface is designed to facilitate parameter variations and initialization of operating points in a highly flexible manner. First, the nonlinear simulation model is automatically driven to selected operating points. Then, using built-in linearization capabilities, the model is linearized around these operating points to generate the corresponding frequency responses. These responses are subsequently examined with respect to passivity criteria, enabling a systematic stability assessment that does not rely on labor-intensive analytical derivations. In addition, the resulting frequency domain data from several representative operating points qualitatively yield the same results as the analytically derived frequency responses from existing literature. The close agreement between the automated and analytical results indicates the accuracy of the linearization procedure. In general, this automated method simplifies the analysis workflow and also provides a tool for evaluating the stability of converters under various operating conditions.

Authors with CRIS profile

Sebastian Streit Lehrstuhl für Elektrische Energiesysteme Alexander Raab Lehrstuhl für Elektrische Energiesysteme Gert Mehlmann Matthias Luther Lehrstuhl für Elektrische Energiesysteme

How to cite

APA:

Streit, S., Raab, A., Mehlmann, G., & Luther, M. (2025). A Framework for Frequency Domain Analysis of Grid-Forming and Grid-Following Converters. In 2025 IEEE Kiel PowerTech, PowerTech 2025. Kiel, DEU, DE: Institute of Electrical and Electronics Engineers Inc..

MLA:

Streit, Sebastian, et al. "A Framework for Frequency Domain Analysis of Grid-Forming and Grid-Following Converters." Proceedings of the 2025 IEEE Kiel PowerTech, PowerTech 2025, Kiel, DEU Institute of Electrical and Electronics Engineers Inc., 2025.

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