NDLI: Diagnosis method of an open-switch fault for a grid-connected T-type three-level inverter system

Content Provider	IEEE Xplore Digital Library
Author	Choi, U.M. Lee, K.B. Blaabjerg, F.
Copyright Year	2012
Description	Author affiliation: Department of Energy Technology, Aalborg University, Aalborg, Denmark (Blaabjerg, F.) \|\| Division of Electrical and Computer Engineering, Ajou University, Suwon, Korea (Choi, U.M.; Lee, K.B.)
Abstract	This paper proposes a diagnosis method of an open-switch fault and fault-tolerant control algorithm for a grid-connected T-type three-level inverter. The location of the faulty switch is identified by using the changes of average phase current and the neutral-point voltage. The fault-tolerant control algorithm can be used when the open switch fault occurs in the middle switches. It is achieved by simply modifying the conventional SVM method. The proposed methods are advantageous as they do not require additional sensors and they do not involve complex calculations. Therefore, this method is cost-effective and industrial interesting. The simulation results confirm the feasibility and effectiveness of the proposed fault-diagnosis and tolerant methods.
Starting Page	470
Ending Page	475
File Size	1432735
Page Count	6
File Format	PDF
ISBN	9781467320214
e-ISBN	9781467320238
e-ISBN	9781467320221
DOI	10.1109/PEDG.2012.6254044
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-25
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault diagnosis T-type inverter Three-level inverter Fault detection Power electronics Open-switch fault Distributed power generation Fault-tolerance
Content Type	Text
Resource Type	Article

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