A Fault Tolerance Method for Multiple Current Sensor Offset Faults in Grid-Connected Inverters
Three-phase grid-connected inverters have been widely used in the distributed generation system, and the current sensor has been applied in closed-loop control in inverters. When the current sensor offset faults occurs, partial fault features of multiple current sensors disappear from the closed-loo...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Machines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-1702/11/1/61 |
| _version_ | 1797439499096031232 |
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| author | Fan Zhang Guangfeng Jin Junchao Geng Tianzhen Wang Jingang Han Hubert Razik Yide Wang |
| author_facet | Fan Zhang Guangfeng Jin Junchao Geng Tianzhen Wang Jingang Han Hubert Razik Yide Wang |
| author_sort | Fan Zhang |
| collection | DOAJ |
| description | Three-phase grid-connected inverters have been widely used in the distributed generation system, and the current sensor has been applied in closed-loop control in inverters. When the current sensor offset faults occurs, partial fault features of multiple current sensors disappear from the closed-loop control grid-connected system, which leads to difficulties for fault diagnostics and fault-tolerant control. This paper proposes a fault tolerance method based on average current compensation mode to eliminate these adverse effects of fault features. The average current compensation mode compensates the average of the three-phase current to the <i>αβ</i> axis current to realize the fault feature reconstruction of the current sensor. The mode does not affect the normal condition of the system. Then, the data-driven method is used for fault diagnosis, and the corresponding fault tolerant control model is selected according to the diagnosis results. Finally, the experimental results show that the proposed strategy has a good fault tolerance control performance and can improve the fault feature discrimination and diagnostic accuracy. |
| first_indexed | 2024-03-09T11:54:51Z |
| format | Article |
| id | doaj.art-c987828c3f2a4b8f9ab86f5532e56fa8 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-09T11:54:51Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-c987828c3f2a4b8f9ab86f5532e56fa82023-11-30T23:11:20ZengMDPI AGMachines2075-17022023-01-011116110.3390/machines11010061A Fault Tolerance Method for Multiple Current Sensor Offset Faults in Grid-Connected InvertersFan Zhang0Guangfeng Jin1Junchao Geng2Tianzhen Wang3Jingang Han4Hubert Razik5Yide Wang6Department of Electrical Automation, Shanghai Maritime University, Shanghai 200135, ChinaDepartment of Electrical Automation, Shanghai Maritime University, Shanghai 200135, ChinaDepartment of Electrical Automation, Shanghai Maritime University, Shanghai 200135, ChinaDepartment of Electrical Automation, Shanghai Maritime University, Shanghai 200135, ChinaDepartment of Electrical Automation, Shanghai Maritime University, Shanghai 200135, ChinaLaboratory Ampere, University of Lyon, 69007 Lyon, FranceIETR Laboratory, University of Nantes, 44300 Nantes, FranceThree-phase grid-connected inverters have been widely used in the distributed generation system, and the current sensor has been applied in closed-loop control in inverters. When the current sensor offset faults occurs, partial fault features of multiple current sensors disappear from the closed-loop control grid-connected system, which leads to difficulties for fault diagnostics and fault-tolerant control. This paper proposes a fault tolerance method based on average current compensation mode to eliminate these adverse effects of fault features. The average current compensation mode compensates the average of the three-phase current to the <i>αβ</i> axis current to realize the fault feature reconstruction of the current sensor. The mode does not affect the normal condition of the system. Then, the data-driven method is used for fault diagnosis, and the corresponding fault tolerant control model is selected according to the diagnosis results. Finally, the experimental results show that the proposed strategy has a good fault tolerance control performance and can improve the fault feature discrimination and diagnostic accuracy.https://www.mdpi.com/2075-1702/11/1/61grid-connected invertermultiple current sensor faultsfault-tolerant control |
| spellingShingle | Fan Zhang Guangfeng Jin Junchao Geng Tianzhen Wang Jingang Han Hubert Razik Yide Wang A Fault Tolerance Method for Multiple Current Sensor Offset Faults in Grid-Connected Inverters Machines grid-connected inverter multiple current sensor faults fault-tolerant control |
| title | A Fault Tolerance Method for Multiple Current Sensor Offset Faults in Grid-Connected Inverters |
| title_full | A Fault Tolerance Method for Multiple Current Sensor Offset Faults in Grid-Connected Inverters |
| title_fullStr | A Fault Tolerance Method for Multiple Current Sensor Offset Faults in Grid-Connected Inverters |
| title_full_unstemmed | A Fault Tolerance Method for Multiple Current Sensor Offset Faults in Grid-Connected Inverters |
| title_short | A Fault Tolerance Method for Multiple Current Sensor Offset Faults in Grid-Connected Inverters |
| title_sort | fault tolerance method for multiple current sensor offset faults in grid connected inverters |
| topic | grid-connected inverter multiple current sensor faults fault-tolerant control |
| url | https://www.mdpi.com/2075-1702/11/1/61 |
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