Assessment, Cause Localization, and Mitigation for Small-Signal Stability Risks in Multi-Parallel Grid-Forming Converter Systems
This article addresses small-signal stability issues for multi-parallel grid-forming converter systems based on a newly developed extended passivity theory. The proposed methods provide streamlined, decentralized stability conditions that cover the full frequency range with reduced conservativeness, serving as theoretical tools and practical guidelines for assessment, cause localization, and mitigation of small-signal instability risks in such systems. Numerical examples and experimental results are provided to verify the effectiveness of the proposed methods.
Authors
- Kin Cheong Sou (ORCID: https://orcid.org/0000-0001-5813-8289)
- Xiongfei Wang (ORCID: https://orcid.org/0000-0002-6327-9729)
- Sei Zhen Khong (ORCID: https://orcid.org/0000-0003-4735-5872)
- Liang Zhao (ORCID: https://orcid.org/0000-0002-2081-7347)
- Karl Henrik Johansson (ORCID: https://orcid.org/0000-0001-9940-5929)
- Henrik Sandberg (ORCID: https://orcid.org/0000-0003-1835-2963)
- Jarno Kukkola (ORCID: https://orcid.org/0000-0001-5794-0165)
- Mikko Routimo (ORCID: https://orcid.org/0000-0001-5009-9481)
- Lennart Harnefors (ORCID: https://orcid.org/0000-0002-3107-7073)
- Dan Wang (ORCID: https://orcid.org/0000-0003-2395-4838)
- Feifan Chen (ORCID: https://orcid.org/0000-0002-5423-4326)
Institutions
- National Sun Yat-sen University (TW)
- Robotics Research (United States) (US)
- ABB (Finland) (FI)
- KTH Royal Institute of Technology (SE)
- Tsinghua University (CN)
Publication Details
- Journal
- IEEE Transactions on Smart Grid
- Published
- 2025-09-04
- DOI
- https://doi.org/10.1109/tsg.2025.3606195
- Citations
- 3
- Primary Topic
- Smart Grid and Power Systems
- Type
- article
- Field-Weighted Citation Impact
- 2.19