Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter
A fault-tolerant control technique is discussed for the Neutral-Point-Clamped (NPC) three-level inverter, which ensures that the NPC inverter operates normally even under device failures. A two-level leg is added to the NPC inverter; when the device open circuit fault occurs, the load of this faulty...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Control Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5126404 |
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| author | Yanxia Shen Beibei Miao Dinghui Wu Kader Ali Ibrahim |
| author_facet | Yanxia Shen Beibei Miao Dinghui Wu Kader Ali Ibrahim |
| author_sort | Yanxia Shen |
| collection | DOAJ |
| description | A fault-tolerant control technique is discussed for the Neutral-Point-Clamped (NPC) three-level inverter, which ensures that the NPC inverter operates normally even under device failures. A two-level leg is added to the NPC inverter; when the device open circuit fault occurs, the load of this faulty phase is connected to the neutral point of this two-level leg through the bidirectional thyristors. An improved Space Vector Pulse Width Modulation (SVPWM) strategy called “addition and subtraction substitution SVPWM” is proposed to effectively suppress fluctuation in capacitor neutral-point voltages by readjusting the sequence and action time of voltage vectors. The fault-tolerant topology in this paper has the advantages of fewer switching devices and lower circuit costs. Experimental results show that the proposed fault-tolerant system can operate in balance of capacitor neutral-point voltages at full output power and the reliability of the inverter is greatly enhanced. |
| format | Article |
| id | doaj-art-e683cc62a7b04865922b443d0b25b8c5 |
| institution | Kabale University |
| issn | 1687-5249 1687-5257 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Control Science and Engineering |
| spelling | doaj-art-e683cc62a7b04865922b443d0b25b8c52025-02-03T06:00:47ZengWileyJournal of Control Science and Engineering1687-52491687-52572018-01-01201810.1155/2018/51264045126404Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level InverterYanxia Shen0Beibei Miao1Dinghui Wu2Kader Ali Ibrahim3Engineering Research Center of Internet of Things Technology Applications of Ministry of Education, Jiangnan University, Wuxi 214122, ChinaEngineering Research Center of Internet of Things Technology Applications of Ministry of Education, Jiangnan University, Wuxi 214122, ChinaEngineering Research Center of Internet of Things Technology Applications of Ministry of Education, Jiangnan University, Wuxi 214122, ChinaEngineering Research Center of Internet of Things Technology Applications of Ministry of Education, Jiangnan University, Wuxi 214122, ChinaA fault-tolerant control technique is discussed for the Neutral-Point-Clamped (NPC) three-level inverter, which ensures that the NPC inverter operates normally even under device failures. A two-level leg is added to the NPC inverter; when the device open circuit fault occurs, the load of this faulty phase is connected to the neutral point of this two-level leg through the bidirectional thyristors. An improved Space Vector Pulse Width Modulation (SVPWM) strategy called “addition and subtraction substitution SVPWM” is proposed to effectively suppress fluctuation in capacitor neutral-point voltages by readjusting the sequence and action time of voltage vectors. The fault-tolerant topology in this paper has the advantages of fewer switching devices and lower circuit costs. Experimental results show that the proposed fault-tolerant system can operate in balance of capacitor neutral-point voltages at full output power and the reliability of the inverter is greatly enhanced.http://dx.doi.org/10.1155/2018/5126404 |
| spellingShingle | Yanxia Shen Beibei Miao Dinghui Wu Kader Ali Ibrahim Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter Journal of Control Science and Engineering |
| title | Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter |
| title_full | Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter |
| title_fullStr | Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter |
| title_full_unstemmed | Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter |
| title_short | Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter |
| title_sort | fault tolerant control strategy for neutral point clamped three level inverter |
| url | http://dx.doi.org/10.1155/2018/5126404 |
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