Research on High Reliability Three-Phase Multi-function Grid-Connected Converter
The three-phase multi-functional grid-connected converter (TMGC) combines the power quality control function while realizing the connection with microgrid, which also has an important application prospect. In order to improve the operation reliability of TMGC, the reconstruction technology and fault...
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| Format: | Article |
| Language: | zho |
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State Grid Energy Research Institute
2023-05-01
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| Series: | Zhongguo dianli |
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| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202206056 |
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| author | Yan LI Xin CHENG Zuliang HUANG Zhuo YANG |
| author_facet | Yan LI Xin CHENG Zuliang HUANG Zhuo YANG |
| author_sort | Yan LI |
| collection | DOAJ |
| description | The three-phase multi-functional grid-connected converter (TMGC) combines the power quality control function while realizing the connection with microgrid, which also has an important application prospect. In order to improve the operation reliability of TMGC, the reconstruction technology and fault tolerant control strategy of TMGC are proposed in this paper. Firstly, a fault diagnosis method for the open circuit fault of the converter is adopted. The fault diagnosis method is carried out according to the characteristics of midpoint voltage deviation before and after fault and the real-time switching state. Secondly, a TMGC reconstruction topology is proposed to realize the reconstruction of TMGC when secondary faults occur, which can enlarge the fault tolerance space. Then, the fault-tolerant control strategy of TMGC is proposed, which combines harmonic suppression control, PQ control and pulse reset method, so that TMGC can continue to realize power control and harmonic suppression functions of grid-connected microgrid after failure. Thus, a high reliability three-phase multi-functional grid-connected converter (HRTMGC) is formed. Finally, the Matlab/Simulink simulation results prove the effectiveness of the proposed reconstruction technology and its fault-tolerant control strategy. |
| format | Article |
| id | doaj-art-76d0dcca8ce8401498705f324da9daff |
| institution | DOAJ |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2023-05-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-76d0dcca8ce8401498705f324da9daff2025-08-20T02:56:51ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492023-05-0156517218110.11930/j.issn.1004-9649.202206056zgdl-56-05-chengxinResearch on High Reliability Three-Phase Multi-function Grid-Connected ConverterYan LI0Xin CHENG1Zuliang HUANG2Zhuo YANG3School of Automation, Central South University, Changsha 410018, ChinaSchool of Automation, Central South University, Changsha 410018, ChinaSchool of Automation, Central South University, Changsha 410018, ChinaSchool of Automation, Central South University, Changsha 410018, ChinaThe three-phase multi-functional grid-connected converter (TMGC) combines the power quality control function while realizing the connection with microgrid, which also has an important application prospect. In order to improve the operation reliability of TMGC, the reconstruction technology and fault tolerant control strategy of TMGC are proposed in this paper. Firstly, a fault diagnosis method for the open circuit fault of the converter is adopted. The fault diagnosis method is carried out according to the characteristics of midpoint voltage deviation before and after fault and the real-time switching state. Secondly, a TMGC reconstruction topology is proposed to realize the reconstruction of TMGC when secondary faults occur, which can enlarge the fault tolerance space. Then, the fault-tolerant control strategy of TMGC is proposed, which combines harmonic suppression control, PQ control and pulse reset method, so that TMGC can continue to realize power control and harmonic suppression functions of grid-connected microgrid after failure. Thus, a high reliability three-phase multi-functional grid-connected converter (HRTMGC) is formed. Finally, the Matlab/Simulink simulation results prove the effectiveness of the proposed reconstruction technology and its fault-tolerant control strategy.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202206056microgridgrid-connected converterfault diagnosisreconstructionharmonic suppression |
| spellingShingle | Yan LI Xin CHENG Zuliang HUANG Zhuo YANG Research on High Reliability Three-Phase Multi-function Grid-Connected Converter Zhongguo dianli microgrid grid-connected converter fault diagnosis reconstruction harmonic suppression |
| title | Research on High Reliability Three-Phase Multi-function Grid-Connected Converter |
| title_full | Research on High Reliability Three-Phase Multi-function Grid-Connected Converter |
| title_fullStr | Research on High Reliability Three-Phase Multi-function Grid-Connected Converter |
| title_full_unstemmed | Research on High Reliability Three-Phase Multi-function Grid-Connected Converter |
| title_short | Research on High Reliability Three-Phase Multi-function Grid-Connected Converter |
| title_sort | research on high reliability three phase multi function grid connected converter |
| topic | microgrid grid-connected converter fault diagnosis reconstruction harmonic suppression |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202206056 |
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