Frequency-Domain Stability Criteria for Converter-Based Power Systems
Frequency-domain stability criteria are developed for converter-based power systems with any number of converters. The converters may be grid following or grid forming, and the grid can be an ac or hybrid ac-dc network. The converters and the network are all modeled in a common (stationary) referenc...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Open Journal of Power Electronics |
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| Online Access: | https://ieeexplore.ieee.org/document/9723635/ |
| _version_ | 1818049228663947264 |
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| author | Jian Sun |
| author_facet | Jian Sun |
| author_sort | Jian Sun |
| collection | DOAJ |
| description | Frequency-domain stability criteria are developed for converter-based power systems with any number of converters. The converters may be grid following or grid forming, and the grid can be an ac or hybrid ac-dc network. The converters and the network are all modeled in a common (stationary) reference frame based on small-signal sequence immittances. Coupling over frequency and ac-dc coupling are considered in the most general form. For each type of systems, a frequency-domain model is developed first by nodal analysis and then reformulated to fit the form of a feedback loop with open-loop stability guaranteed by practical conditions. System stability is then determined by a Nyquist-like criterion without the need to check open-loop right-half-plane poles. Further simplification of the system models is made possible by a) generalized <inline-formula><tex-math notation="LaTeX">$n$</tex-math></inline-formula>-port equivalent circuits that include both types of coupling, b) equivalence of stability at internal and external nodes, and c) relationship between dynamics at the perturbation and the coupling frequency. Reduction of a system model into separate single-input-single-output models is presented for several special systems along with their practical applications. Quantitative and experimental results are presented to verify the developed theories. |
| first_indexed | 2024-12-10T10:34:15Z |
| format | Article |
| id | doaj.art-e5a9a4c4e86d4c0589590b77c7a88432 |
| institution | Directory Open Access Journal |
| issn | 2644-1314 |
| language | English |
| last_indexed | 2024-12-10T10:34:15Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Power Electronics |
| spelling | doaj.art-e5a9a4c4e86d4c0589590b77c7a884322022-12-22T01:52:30ZengIEEEIEEE Open Journal of Power Electronics2644-13142022-01-01322225410.1109/OJPEL.2022.31555689723635Frequency-Domain Stability Criteria for Converter-Based Power SystemsJian Sun0https://orcid.org/0000-0001-8820-5593Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY, USAFrequency-domain stability criteria are developed for converter-based power systems with any number of converters. The converters may be grid following or grid forming, and the grid can be an ac or hybrid ac-dc network. The converters and the network are all modeled in a common (stationary) reference frame based on small-signal sequence immittances. Coupling over frequency and ac-dc coupling are considered in the most general form. For each type of systems, a frequency-domain model is developed first by nodal analysis and then reformulated to fit the form of a feedback loop with open-loop stability guaranteed by practical conditions. System stability is then determined by a Nyquist-like criterion without the need to check open-loop right-half-plane poles. Further simplification of the system models is made possible by a) generalized <inline-formula><tex-math notation="LaTeX">$n$</tex-math></inline-formula>-port equivalent circuits that include both types of coupling, b) equivalence of stability at internal and external nodes, and c) relationship between dynamics at the perturbation and the coupling frequency. Reduction of a system model into separate single-input-single-output models is presented for several special systems along with their practical applications. Quantitative and experimental results are presented to verify the developed theories.https://ieeexplore.ieee.org/document/9723635/Converter-based power systemsfrequency-domain stability analysisimpedance modelingstability criteria |
| spellingShingle | Jian Sun Frequency-Domain Stability Criteria for Converter-Based Power Systems IEEE Open Journal of Power Electronics Converter-based power systems frequency-domain stability analysis impedance modeling stability criteria |
| title | Frequency-Domain Stability Criteria for Converter-Based Power Systems |
| title_full | Frequency-Domain Stability Criteria for Converter-Based Power Systems |
| title_fullStr | Frequency-Domain Stability Criteria for Converter-Based Power Systems |
| title_full_unstemmed | Frequency-Domain Stability Criteria for Converter-Based Power Systems |
| title_short | Frequency-Domain Stability Criteria for Converter-Based Power Systems |
| title_sort | frequency domain stability criteria for converter based power systems |
| topic | Converter-based power systems frequency-domain stability analysis impedance modeling stability criteria |
| url | https://ieeexplore.ieee.org/document/9723635/ |
| work_keys_str_mv | AT jiansun frequencydomainstabilitycriteriaforconverterbasedpowersystems |