Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT
To increase the reliability of a doubly fed induction generator-based wind turbine (DFIG-WT), this paper proposes a fault-tolerant four-switch three-phase (FSTP) grid-side converter (GSC) with a phase current reconstruction strategy. The proposed strategy is effective when the semiconductor open-cir...
| Main Authors: | , , , , |
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| Format: | Article |
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IEEE
2018-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8408456/ |
| _version_ | 1818877453145210880 |
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| author | Kai Ni Wei Li Yang Liu Dongsheng Yu Yihua Hu |
| author_facet | Kai Ni Wei Li Yang Liu Dongsheng Yu Yihua Hu |
| author_sort | Kai Ni |
| collection | DOAJ |
| description | To increase the reliability of a doubly fed induction generator-based wind turbine (DFIG-WT), this paper proposes a fault-tolerant four-switch three-phase (FSTP) grid-side converter (GSC) with a phase current reconstruction strategy. The proposed strategy is effective when the semiconductor open-circuit fault and phase current sensor failure occur simultaneously, which is a kind of hybrid fault. Only one current sensor is applied for measuring the currents flowing between the ac and dc sides of the GSC, and the phase current information can be derived by combining this information with the switching states of FSTP GSC. In the proposed current reconstruction strategy, only two scenarios of duty ratio allocation are needed to be considered. In addition, the space vector pulsewidth modulation (SVPWM) technique is simplified by obtaining the unified expressions for the duty ratios for the remaining four switches in GSC, and the sector identification is removed. Besides, the voltage balancing on the dc bus is achieved. Furthermore, the limitation of the proposed current reconstruction strategy is presented, and the dead zones for SVPWM techniques in both six-switch three-phase and FSTP converters are analyzed. Simulations are carried out in MATLAB/Simulink to verify the proposed hybrid fault-tolerant strategy for the GSC in a 1.5-MW DFIG-WT. |
| first_indexed | 2024-12-19T13:58:31Z |
| format | Article |
| id | doaj.art-bd6d6fb40ced497eb8372d8ed2c3d043 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T13:58:31Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-bd6d6fb40ced497eb8372d8ed2c3d0432022-12-21T20:18:32ZengIEEEIEEE Access2169-35362018-01-016392873929710.1109/ACCESS.2018.28537618408456Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WTKai Ni0https://orcid.org/0000-0002-7467-2921Wei Li1Yang Liu2https://orcid.org/0000-0002-1228-9038Dongsheng Yu3https://orcid.org/0000-0002-2269-3659Yihua Hu4Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K.State Grid International Development Co., Ltd, Beijing, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou, ChinaSchool of Electric and Power Engineering, China University of Mining and Technology, Xuzhou, ChinaDepartment of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K.To increase the reliability of a doubly fed induction generator-based wind turbine (DFIG-WT), this paper proposes a fault-tolerant four-switch three-phase (FSTP) grid-side converter (GSC) with a phase current reconstruction strategy. The proposed strategy is effective when the semiconductor open-circuit fault and phase current sensor failure occur simultaneously, which is a kind of hybrid fault. Only one current sensor is applied for measuring the currents flowing between the ac and dc sides of the GSC, and the phase current information can be derived by combining this information with the switching states of FSTP GSC. In the proposed current reconstruction strategy, only two scenarios of duty ratio allocation are needed to be considered. In addition, the space vector pulsewidth modulation (SVPWM) technique is simplified by obtaining the unified expressions for the duty ratios for the remaining four switches in GSC, and the sector identification is removed. Besides, the voltage balancing on the dc bus is achieved. Furthermore, the limitation of the proposed current reconstruction strategy is presented, and the dead zones for SVPWM techniques in both six-switch three-phase and FSTP converters are analyzed. Simulations are carried out in MATLAB/Simulink to verify the proposed hybrid fault-tolerant strategy for the GSC in a 1.5-MW DFIG-WT.https://ieeexplore.ieee.org/document/8408456/Reliabilitydoubly-fed induction generator-based wind turbinegrid-side converterfour-switch three-phasephase current reconstructionspace vector pulse width modulation |
| spellingShingle | Kai Ni Wei Li Yang Liu Dongsheng Yu Yihua Hu Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT IEEE Access Reliability doubly-fed induction generator-based wind turbine grid-side converter four-switch three-phase phase current reconstruction space vector pulse width modulation |
| title | Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT |
| title_full | Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT |
| title_fullStr | Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT |
| title_full_unstemmed | Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT |
| title_short | Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT |
| title_sort | phase current reconstruction for the grid side converter with four switch three phase topology in a dfig wt |
| topic | Reliability doubly-fed induction generator-based wind turbine grid-side converter four-switch three-phase phase current reconstruction space vector pulse width modulation |
| url | https://ieeexplore.ieee.org/document/8408456/ |
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