Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches
In recent years, T-type three-level inverter (TLI) has attracted attentions due to its advantages, such as simple structure and higher efficiency. Neutral point voltage (NPV) is very critical for its normal operation, and the necessary conditions of maintaining NPV balance respectively in a switchin...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9245477/ |
| _version_ | 1818865591845388288 |
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| author | Jinping Wang Wei Zhang Weidong Jiang Mingna Ma Qingyan Zhang Xinmei Huang |
| author_facet | Jinping Wang Wei Zhang Weidong Jiang Mingna Ma Qingyan Zhang Xinmei Huang |
| author_sort | Jinping Wang |
| collection | DOAJ |
| description | In recent years, T-type three-level inverter (TLI) has attracted attentions due to its advantages, such as simple structure and higher efficiency. Neutral point voltage (NPV) is very critical for its normal operation, and the necessary conditions of maintaining NPV balance respectively in a switching cycle and in a fundamental cycle are simply reviewed in this paper. With the increment of power switches, the reliability of T-type TLI becomes particularly important. When switch faults occur, fault-tolerant control strategies are usually adopted. However, in existing literatures, it is unknown whether the NPV balance can be still maintained under different fault types. Therefore, the application range of a fault-tolerant control is also unknown. In this paper, based on the necessary conditions of maintaining NPV balance, the application ranges of two representative fault-tolerant control strategies are revealed under different open-circuit (OC) fault types in inner switch. It found that the application ranges are closely related to the modulation index, load power factor (PF) and OC fault type. Finally, the correctness of the theoretical analysis is verified by the experimental results. |
| first_indexed | 2024-12-19T10:49:59Z |
| format | Article |
| id | doaj.art-7cd2a7aa8e674b3dbb32c8cf86fc024a |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T10:49:59Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-7cd2a7aa8e674b3dbb32c8cf86fc024a2022-12-21T20:25:02ZengIEEEIEEE Access2169-35362020-01-01820759920760910.1109/ACCESS.2020.30349199245477Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner SwitchesJinping Wang0https://orcid.org/0000-0002-5894-6419Wei Zhang1Weidong Jiang2https://orcid.org/0000-0003-1172-6299Mingna Ma3https://orcid.org/0000-0001-7573-1391Qingyan Zhang4Xinmei Huang5School of Electrical Engineering and Automation, Hefei University of Technology, Hefei, ChinaSchool of Electrical Engineering and Automation, Hefei University of Technology, Hefei, ChinaSchool of Electrical Engineering and Automation, Hefei University of Technology, Hefei, ChinaSchool of Electrical Engineering and Automation, Hefei University of Technology, Hefei, ChinaSchool of Electrical Engineering and Automation, Hefei University of Technology, Hefei, ChinaSchool of Electrical Engineering and Automation, Hefei University of Technology, Hefei, ChinaIn recent years, T-type three-level inverter (TLI) has attracted attentions due to its advantages, such as simple structure and higher efficiency. Neutral point voltage (NPV) is very critical for its normal operation, and the necessary conditions of maintaining NPV balance respectively in a switching cycle and in a fundamental cycle are simply reviewed in this paper. With the increment of power switches, the reliability of T-type TLI becomes particularly important. When switch faults occur, fault-tolerant control strategies are usually adopted. However, in existing literatures, it is unknown whether the NPV balance can be still maintained under different fault types. Therefore, the application range of a fault-tolerant control is also unknown. In this paper, based on the necessary conditions of maintaining NPV balance, the application ranges of two representative fault-tolerant control strategies are revealed under different open-circuit (OC) fault types in inner switch. It found that the application ranges are closely related to the modulation index, load power factor (PF) and OC fault type. Finally, the correctness of the theoretical analysis is verified by the experimental results.https://ieeexplore.ieee.org/document/9245477/T-type three-level inverterneutral-point balanceopen-circuit faultfault-tolerant control |
| spellingShingle | Jinping Wang Wei Zhang Weidong Jiang Mingna Ma Qingyan Zhang Xinmei Huang Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches IEEE Access T-type three-level inverter neutral-point balance open-circuit fault fault-tolerant control |
| title | Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches |
| title_full | Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches |
| title_fullStr | Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches |
| title_full_unstemmed | Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches |
| title_short | Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches |
| title_sort | application ranges of fault tolerant control for t type three level inverter under single multi phase open circuit faults of inner switches |
| topic | T-type three-level inverter neutral-point balance open-circuit fault fault-tolerant control |
| url | https://ieeexplore.ieee.org/document/9245477/ |
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