Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/614309
Title: Open-Circuit Fault Diagnosis and Fault-Tolerant Control for a Grid-Connected NPC Inverter
Authors: Ui-Min Choi;June-Seok Lee;Frede Blaabjerg;Kyo-Beum Lee
subject: grid-connected inverter|fault-tolerant control|reliability|fault detection|open-circuit fault|NPC inverter
Year: 2016
Publisher: IEEE
Abstract: This paper presents an open-circuit fault detection method for a grid-connected neutral-point clamped (NPC) inverter system. Further, a fault-tolerant control method under an open-circuit fault in clamping diodes is proposed. Under the grid-connected condition, it is impossible to identify the location of a faulty switch by the conventional methods which usually use the distortion of outputs because the distortion of the outputs is the same in some fault cases. The proposed fault detection method identifies the location of the faulty switch and the faulty clamping diode of the NPC inverter without any additional hardware or complex calculations. In the case of the clamping diode faults, the NPC inverter can transfer full rated power with sinusoidal currents by the proposed fault-tolerant control. The feasibility of the proposed fault detection and the fault-tolerant control methods for the grid-connected NPC inverter are verified by simulation and experimental results.
URI: http://localhost/handle/Hannan/154027
http://localhost/handle/Hannan/614309
ISSN: 0885-8993
1941-0107
volume: 31
issue: 10
Appears in Collections:2016

Files in This Item:
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7360223.pdf9.61 MBAdobe PDFThumbnail
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Title: Open-Circuit Fault Diagnosis and Fault-Tolerant Control for a Grid-Connected NPC Inverter
Authors: Ui-Min Choi;June-Seok Lee;Frede Blaabjerg;Kyo-Beum Lee
subject: grid-connected inverter|fault-tolerant control|reliability|fault detection|open-circuit fault|NPC inverter
Year: 2016
Publisher: IEEE
Abstract: This paper presents an open-circuit fault detection method for a grid-connected neutral-point clamped (NPC) inverter system. Further, a fault-tolerant control method under an open-circuit fault in clamping diodes is proposed. Under the grid-connected condition, it is impossible to identify the location of a faulty switch by the conventional methods which usually use the distortion of outputs because the distortion of the outputs is the same in some fault cases. The proposed fault detection method identifies the location of the faulty switch and the faulty clamping diode of the NPC inverter without any additional hardware or complex calculations. In the case of the clamping diode faults, the NPC inverter can transfer full rated power with sinusoidal currents by the proposed fault-tolerant control. The feasibility of the proposed fault detection and the fault-tolerant control methods for the grid-connected NPC inverter are verified by simulation and experimental results.
URI: http://localhost/handle/Hannan/154027
http://localhost/handle/Hannan/614309
ISSN: 0885-8993
1941-0107
volume: 31
issue: 10
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7360223.pdf9.61 MBAdobe PDFThumbnail
Preview File
Title: Open-Circuit Fault Diagnosis and Fault-Tolerant Control for a Grid-Connected NPC Inverter
Authors: Ui-Min Choi;June-Seok Lee;Frede Blaabjerg;Kyo-Beum Lee
subject: grid-connected inverter|fault-tolerant control|reliability|fault detection|open-circuit fault|NPC inverter
Year: 2016
Publisher: IEEE
Abstract: This paper presents an open-circuit fault detection method for a grid-connected neutral-point clamped (NPC) inverter system. Further, a fault-tolerant control method under an open-circuit fault in clamping diodes is proposed. Under the grid-connected condition, it is impossible to identify the location of a faulty switch by the conventional methods which usually use the distortion of outputs because the distortion of the outputs is the same in some fault cases. The proposed fault detection method identifies the location of the faulty switch and the faulty clamping diode of the NPC inverter without any additional hardware or complex calculations. In the case of the clamping diode faults, the NPC inverter can transfer full rated power with sinusoidal currents by the proposed fault-tolerant control. The feasibility of the proposed fault detection and the fault-tolerant control methods for the grid-connected NPC inverter are verified by simulation and experimental results.
URI: http://localhost/handle/Hannan/154027
http://localhost/handle/Hannan/614309
ISSN: 0885-8993
1941-0107
volume: 31
issue: 10
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7360223.pdf9.61 MBAdobe PDFThumbnail
Preview File