A Fast and Accurate Method for dq Impedance Modeling of Power Electronics Systems Based on Finite Differences
This paper presents a finite-difference-based method for numerically deriving the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>D</mi><mi>Q</mi></mrow></semantics>...
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| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Modelling |
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| Online Access: | https://www.mdpi.com/2673-3951/5/4/99 |
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| author | Julio Hernández-Ramírez Juan Segundo-Ramírez Nancy Visairo-Cruz C. Alberto Núñez Guitiérrez |
| author_facet | Julio Hernández-Ramírez Juan Segundo-Ramírez Nancy Visairo-Cruz C. Alberto Núñez Guitiérrez |
| author_sort | Julio Hernández-Ramírez |
| collection | DOAJ |
| description | This paper presents a finite-difference-based method for numerically deriving the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>D</mi><mi>Q</mi></mrow></semantics></math></inline-formula> impedance model of power electronics-based power systems, specifically tailored for stability analysis. The proposed method offers a computationally efficient alternative to traditional approaches by directly applying finite-difference approximations to the large-signal dynamic system, without relying on repetitive time-domain simulations or small-signal analytical models. This method eliminates the need for additional models or complex procedures to compute the steady-state solution, streamlining the impedance modeling process. The accuracy, efficiency, and precision of the proposed method are evaluated through comparative studies with analytical and time-domain perturbation methods. Results demonstrate that the proposed approach provides accuracy comparable to analytical models while significantly reducing computational effort, outperforming perturbation methods in both speed and precision. These findings highlight the practical value of the proposed method for real-time and large-scale system analysis, making it a robust tool for power systems stability assessment. |
| format | Article |
| id | doaj-art-d4d65bb43fd4436386264a16c18b75dc |
| institution | DOAJ |
| issn | 2673-3951 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Modelling |
| spelling | doaj-art-d4d65bb43fd4436386264a16c18b75dc2025-08-20T02:43:39ZengMDPI AGModelling2673-39512024-12-01541905192310.3390/modelling5040099A Fast and Accurate Method for dq Impedance Modeling of Power Electronics Systems Based on Finite DifferencesJulio Hernández-Ramírez0Juan Segundo-Ramírez1Nancy Visairo-Cruz2C. Alberto Núñez Guitiérrez3Centro de Investigación y Estudios de Posgrado (CIEP), Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78290, MexicoCentro de Investigación y Estudios de Posgrado (CIEP), Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78290, MexicoCentro de Investigación y Estudios de Posgrado (CIEP), Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78290, MexicoCentro de Investigación y Estudios de Posgrado (CIEP), Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78290, MexicoThis paper presents a finite-difference-based method for numerically deriving the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>D</mi><mi>Q</mi></mrow></semantics></math></inline-formula> impedance model of power electronics-based power systems, specifically tailored for stability analysis. The proposed method offers a computationally efficient alternative to traditional approaches by directly applying finite-difference approximations to the large-signal dynamic system, without relying on repetitive time-domain simulations or small-signal analytical models. This method eliminates the need for additional models or complex procedures to compute the steady-state solution, streamlining the impedance modeling process. The accuracy, efficiency, and precision of the proposed method are evaluated through comparative studies with analytical and time-domain perturbation methods. Results demonstrate that the proposed approach provides accuracy comparable to analytical models while significantly reducing computational effort, outperforming perturbation methods in both speed and precision. These findings highlight the practical value of the proposed method for real-time and large-scale system analysis, making it a robust tool for power systems stability assessment.https://www.mdpi.com/2673-3951/5/4/99impedance-based methodsmall-signal stabilityVSC-based systems |
| spellingShingle | Julio Hernández-Ramírez Juan Segundo-Ramírez Nancy Visairo-Cruz C. Alberto Núñez Guitiérrez A Fast and Accurate Method for dq Impedance Modeling of Power Electronics Systems Based on Finite Differences Modelling impedance-based method small-signal stability VSC-based systems |
| title | A Fast and Accurate Method for dq Impedance Modeling of Power Electronics Systems Based on Finite Differences |
| title_full | A Fast and Accurate Method for dq Impedance Modeling of Power Electronics Systems Based on Finite Differences |
| title_fullStr | A Fast and Accurate Method for dq Impedance Modeling of Power Electronics Systems Based on Finite Differences |
| title_full_unstemmed | A Fast and Accurate Method for dq Impedance Modeling of Power Electronics Systems Based on Finite Differences |
| title_short | A Fast and Accurate Method for dq Impedance Modeling of Power Electronics Systems Based on Finite Differences |
| title_sort | fast and accurate method for dq impedance modeling of power electronics systems based on finite differences |
| topic | impedance-based method small-signal stability VSC-based systems |
| url | https://www.mdpi.com/2673-3951/5/4/99 |
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