Stability Analysis and Active Damping Design for Grid-Forming Converters in LC Resonant Grids
In this article, a small-signal model of grid-forming (GFM) converters that takes into account the presence of ac shunt capacitors in the power grid is presented. It is revealed that the inclusion of shunt ac capacitors in GFM converters leads to the emergence of two new resonant peaks in the loop g...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Open Journal of the Industrial Electronics Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10438013/ |
| _version_ | 1797243331950936064 |
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| author | SHIYI LIU Heng Wu Xiongfei Wang Theo Bosma Ganesh Sauba |
| author_facet | SHIYI LIU Heng Wu Xiongfei Wang Theo Bosma Ganesh Sauba |
| author_sort | SHIYI LIU |
| collection | DOAJ |
| description | In this article, a small-signal model of grid-forming (GFM) converters that takes into account the presence of ac shunt capacitors in the power grid is presented. It is revealed that the inclusion of shunt ac capacitors in GFM converters leads to the emergence of two new resonant peaks in the loop gain of the active power control (APC) loop, in addition to the fundamental-frequency resonant peak that was previously identified in literature. Further analysis based on the equivalent APC considering P/Q coupling has confirmed the same destabilization effect of ac shunt capacitors by introducing two extra resonant peaks. Based on the insight, it is suggested that the active damping control needs to be adapted to effectively dampen all three resonant peaks to ensure the stable operation of GFM converters. Finally, simulations and real-time simulations are carried out to corroborate the theoretical findings. |
| first_indexed | 2024-04-24T18:53:25Z |
| format | Article |
| id | doaj.art-d365a022c0d3444496645fd049b72154 |
| institution | Directory Open Access Journal |
| issn | 2644-1284 |
| language | English |
| last_indexed | 2024-04-24T18:53:25Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Industrial Electronics Society |
| spelling | doaj.art-d365a022c0d3444496645fd049b721542024-03-26T17:49:21ZengIEEEIEEE Open Journal of the Industrial Electronics Society2644-12842024-01-01514315410.1109/OJIES.2024.336629010438013Stability Analysis and Active Damping Design for Grid-Forming Converters in LC Resonant GridsSHIYI LIU0https://orcid.org/0000-0001-7114-7518Heng Wu1https://orcid.org/0000-0001-7114-7518Xiongfei Wang2https://orcid.org/0000-0001-7114-7518Theo Bosma3Ganesh Sauba4Energy System Group, DNV, Arnhem, The NetherlandsDepartment of Energy Technology, Aalborg University, Aalborg, DenmarkDepartment of Energy Technology, Aalborg University, Aalborg, DenmarkEnergy System Group, DNV, Arnhem, The NetherlandsEnergy System Group, DNV, Arnhem, The NetherlandsIn this article, a small-signal model of grid-forming (GFM) converters that takes into account the presence of ac shunt capacitors in the power grid is presented. It is revealed that the inclusion of shunt ac capacitors in GFM converters leads to the emergence of two new resonant peaks in the loop gain of the active power control (APC) loop, in addition to the fundamental-frequency resonant peak that was previously identified in literature. Further analysis based on the equivalent APC considering P/Q coupling has confirmed the same destabilization effect of ac shunt capacitors by introducing two extra resonant peaks. Based on the insight, it is suggested that the active damping control needs to be adapted to effectively dampen all three resonant peaks to ensure the stable operation of GFM converters. Finally, simulations and real-time simulations are carried out to corroborate the theoretical findings.https://ieeexplore.ieee.org/document/10438013/Active dampinggrid-forming (GFM)power controlsmall-signal modelstabilityvoltage-source converters |
| spellingShingle | SHIYI LIU Heng Wu Xiongfei Wang Theo Bosma Ganesh Sauba Stability Analysis and Active Damping Design for Grid-Forming Converters in LC Resonant Grids IEEE Open Journal of the Industrial Electronics Society Active damping grid-forming (GFM) power control small-signal model stability voltage-source converters |
| title | Stability Analysis and Active Damping Design for Grid-Forming Converters in LC Resonant Grids |
| title_full | Stability Analysis and Active Damping Design for Grid-Forming Converters in LC Resonant Grids |
| title_fullStr | Stability Analysis and Active Damping Design for Grid-Forming Converters in LC Resonant Grids |
| title_full_unstemmed | Stability Analysis and Active Damping Design for Grid-Forming Converters in LC Resonant Grids |
| title_short | Stability Analysis and Active Damping Design for Grid-Forming Converters in LC Resonant Grids |
| title_sort | stability analysis and active damping design for grid forming converters in lc resonant grids |
| topic | Active damping grid-forming (GFM) power control small-signal model stability voltage-source converters |
| url | https://ieeexplore.ieee.org/document/10438013/ |
| work_keys_str_mv | AT shiyiliu stabilityanalysisandactivedampingdesignforgridformingconvertersinlcresonantgrids AT hengwu stabilityanalysisandactivedampingdesignforgridformingconvertersinlcresonantgrids AT xiongfeiwang stabilityanalysisandactivedampingdesignforgridformingconvertersinlcresonantgrids AT theobosma stabilityanalysisandactivedampingdesignforgridformingconvertersinlcresonantgrids AT ganeshsauba stabilityanalysisandactivedampingdesignforgridformingconvertersinlcresonantgrids |