A Frequency-Domain Stability Margin Indicator for Grid-Connected Converter Systems
Paper in proceeding, 2025
Grid-connected converter systems with multiple control loops impact grid stability, especially with increasing renewable energy penetration. This paper proposes a frequency-domain stability margin indicator that simplifies stability assessment by reducing complexity and linking stability margins to system properties. Validated for SISO systems and extended to MIMO systems, the indicator effectively identifies stability margins and predicts the system robustness.
stability margin
frequency-domain stability
Nyquist
Grid-connected converter
Author
Jin Wang
Chalmers, Electrical Engineering, Electric Power Engineering
Amir Zamani Babgohari
Chalmers, Electrical Engineering, Electric Power Engineering
Mebtu Bihonegn Beza
Chalmers, Electrical Engineering, Electric Power Engineering
Massimo Bongiorno
Chalmers, Electrical Engineering, Electric Power Engineering
Anant Narula
Chalmers, Electrical Engineering, Electric Power Engineering
Jan R Svensson
Chalmers, Electrical Engineering, Electric Power Engineering
2025 IEEE Energy Conversion Conference Congress and Exposition USA
2329-3721 (ISSN) 2329-3748 (eISSN)
1-8979-8-3315-4130-9 (ISBN)
2025 IEEE Energy Conversion Conference Congress and Exposition (ECCE)
Philadelphia, USA,
Philadelphia, USA,
Subject Categories (SSIF 2025)
Other Electrical Engineering, Electronic Engineering, Information Engineering
Control Engineering
Areas of Advance
Energy
DOI
10.1109/ECCE58356.2025.11260299
ISBN
9798331541309