Abstract
Positive- and negative-sequence equivalent-circuit models are put forth to capture the operation of grid-forming (GFM) inverters in unbalanced steady-state operating conditions acknowledging the impact of current limiting. The particular control architecture examined adopts droop control (for primary control), nested inner-current and outer-voltage control (in the stationary reference frame), and it is adaptable to two different types of current limiting (current-reference saturation and virtual-impedance limiting). We anticipate the proposed models to be of interest in modeling, analysis, and simulation of GFM inverters in unbalanced settings that may arise, e.g., in the face of faults. Validation of the equivalent-circuit models is pursued via comparison with full-order electromagnetic-transient (EMT) simulations for representative balanced and unbalanced faults.
Original language | English (US) |
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Title of host publication | Proceedings of the 58th Hawaii International Conference on System Sciences, HICSS 2025 |
Editors | Tung X. Bui |
Publisher | IEEE Computer Society |
Pages | 2998-3007 |
Number of pages | 10 |
ISBN (Electronic) | 9780998133188 |
State | Published - 2025 |
Event | 58th Hawaii International Conference on System Sciences, HICSS 2025 - Honolulu, United States Duration: Jan 7 2025 → Jan 10 2025 |
Publication series
Name | Proceedings of the Annual Hawaii International Conference on System Sciences |
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ISSN (Print) | 1530-1605 |
Conference
Conference | 58th Hawaii International Conference on System Sciences, HICSS 2025 |
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Country/Territory | United States |
City | Honolulu |
Period | 1/7/25 → 1/10/25 |
Bibliographical note
Publisher Copyright:© 2025 IEEE Computer Society. All rights reserved.
Keywords
- Equivalent-circuit models
- fault analysis
- grid-forming inverters
- power systems
- unbalanced faults