Harmonic Analysis of Type-3 Wind Turbines Subject to Grid Unbalance
The objective of this paper is to adequately model a doubly-fed induction generator (DFIG)-based type-3 wind turbine under grid unbalance by considering not only positive and negative-sequence circuits but also the 3rd harmonic circuit. This 3rd harmonic is a positive sequence component caused by fr...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Open Access Journal of Power and Energy |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10124044/ |
| _version_ | 1797351707420655616 |
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| author | Mohammed Alqahtani Zhixin Miao Lingling Fan |
| author_facet | Mohammed Alqahtani Zhixin Miao Lingling Fan |
| author_sort | Mohammed Alqahtani |
| collection | DOAJ |
| description | The objective of this paper is to adequately model a doubly-fed induction generator (DFIG)-based type-3 wind turbine under grid unbalance by considering not only positive and negative-sequence circuits but also the 3rd harmonic circuit. This 3rd harmonic is a positive sequence component caused by frequency coupling with the negative-sequence 60-Hz component. It is not a zero-sequence component and cannot be got rid of by delta-connected transformers. Hence, accurate modeling is necessary to capture this harmonic component. In addition to modeling, we design an efficient algorithm for steady-state analysis by formulating the steady-state analysis problem as an optimization problem. A set of equality constraints has been formed to reflect the relationship of voltage, current, and power in the ac circuits, the dc circuit, and the different frames. This formulation is defined in YALMIP, a MATLAB interface for optimization problems. The optimization problem is then solved by a nonlinear optimization solver. The results of the steady-state analysis are phasors of harmonic components at steady state. They have been validated by the phasors obtained from Fourier transforms of electromagnetic transient (EMT) simulation results. The paper contributes to both the sophisticated phasor model of DFIG with consideration of grid unbalance and the efficient computing procedure of steady-state analysis by use of advanced solvers. |
| first_indexed | 2024-03-08T13:04:26Z |
| format | Article |
| id | doaj.art-9aa1f10ac9ee4ee9b7bbe8810bd2fba1 |
| institution | Directory Open Access Journal |
| issn | 2687-7910 |
| language | English |
| last_indexed | 2024-03-08T13:04:26Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Access Journal of Power and Energy |
| spelling | doaj.art-9aa1f10ac9ee4ee9b7bbe8810bd2fba12024-01-19T00:01:23ZengIEEEIEEE Open Access Journal of Power and Energy2687-79102023-01-011045046210.1109/OAJPE.2023.327581010124044Harmonic Analysis of Type-3 Wind Turbines Subject to Grid UnbalanceMohammed Alqahtani0https://orcid.org/0000-0002-6811-8318Zhixin Miao1https://orcid.org/0000-0001-5623-4074Lingling Fan2https://orcid.org/0000-0002-4686-1602Electrical Engineering Department, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi ArabiaDepartment of Electrical Engineering, University of South Florida, Tampa, FL, USADepartment of Electrical Engineering, University of South Florida, Tampa, FL, USAThe objective of this paper is to adequately model a doubly-fed induction generator (DFIG)-based type-3 wind turbine under grid unbalance by considering not only positive and negative-sequence circuits but also the 3rd harmonic circuit. This 3rd harmonic is a positive sequence component caused by frequency coupling with the negative-sequence 60-Hz component. It is not a zero-sequence component and cannot be got rid of by delta-connected transformers. Hence, accurate modeling is necessary to capture this harmonic component. In addition to modeling, we design an efficient algorithm for steady-state analysis by formulating the steady-state analysis problem as an optimization problem. A set of equality constraints has been formed to reflect the relationship of voltage, current, and power in the ac circuits, the dc circuit, and the different frames. This formulation is defined in YALMIP, a MATLAB interface for optimization problems. The optimization problem is then solved by a nonlinear optimization solver. The results of the steady-state analysis are phasors of harmonic components at steady state. They have been validated by the phasors obtained from Fourier transforms of electromagnetic transient (EMT) simulation results. The paper contributes to both the sophisticated phasor model of DFIG with consideration of grid unbalance and the efficient computing procedure of steady-state analysis by use of advanced solvers.https://ieeexplore.ieee.org/document/10124044/Type-3 wind turbinesunbalanced grid conditionharmonicsphasor models |
| spellingShingle | Mohammed Alqahtani Zhixin Miao Lingling Fan Harmonic Analysis of Type-3 Wind Turbines Subject to Grid Unbalance IEEE Open Access Journal of Power and Energy Type-3 wind turbines unbalanced grid condition harmonics phasor models |
| title | Harmonic Analysis of Type-3 Wind Turbines Subject to Grid Unbalance |
| title_full | Harmonic Analysis of Type-3 Wind Turbines Subject to Grid Unbalance |
| title_fullStr | Harmonic Analysis of Type-3 Wind Turbines Subject to Grid Unbalance |
| title_full_unstemmed | Harmonic Analysis of Type-3 Wind Turbines Subject to Grid Unbalance |
| title_short | Harmonic Analysis of Type-3 Wind Turbines Subject to Grid Unbalance |
| title_sort | harmonic analysis of type 3 wind turbines subject to grid unbalance |
| topic | Type-3 wind turbines unbalanced grid condition harmonics phasor models |
| url | https://ieeexplore.ieee.org/document/10124044/ |
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