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Title: The Fault Detection, Localization, and Tolerant Operation of Modular Multilevel Converters with an Insulated Gate Bipolar Transistor (IGBT) Open Circuit Fault

Reliability is one of the critical issues for a modular multilevel converter (MMC) since it consists of a large number of series-connected power electronics submodules (SMs). Here in this paper, a complete control strategy including fault detection, localization, and tolerant operation is proposed for the MMC under an insulated gate bipolar transistor (IGBT) open circuit fault. According to the output characteristics of the SM with the open-circuit fault of IGBT, a fault detection method based on the circulating current and output current observation is used. In order to further precisely locate the position of the faulty SM, a fault localization method based on the SM capacitor voltage observation is developed. After the faulty SM is isolated, the continuous operation of the converter is ensured by adopting the fault-tolerant strategy based on the use of redundant modules. To verify the proposed fault detection, fault localization, and fault-tolerant operation strategies, a 900 kVA MMC system under the conditions of an IGBT open circuit is developed in the Matlab/Simulink platform. The capabilities of rapid detection, precise positioning, and fault-tolerant operation of the investigated detection and control algorithms are also demonstrated.
Authors:
 [1] ;  [1] ; ORCiD logo [2] ;  [3] ; ORCiD logo [3] ;  [4]
  1. North China Electric Power Univ., Beijing (China). State Key Lab. of Alternate Electrical Power System with Renewable Energy Sources
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Power Electronics and Electric Machine Group
  3. Univ. of Liverpool (United Kingdom). Dept. of Electrical Engineering and Electronics
  4. Xi’an Jiaotong Liverpool Univ., Suzhou (China). Dept. of Electrical and Electronic Engineering
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Energies (Basel)
Additional Journal Information:
Journal Name: Energies (Basel); Journal Volume: 11; Journal Issue: 4; Journal ID: ISSN 1996-1073
Publisher:
MDPI AG
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING
OSTI Identifier:
1474568

Li, Wei, Li, Gengyin, Zeng, Rong, Ni, Kai, Hu, Yihua, and Wen, Huiqing. The Fault Detection, Localization, and Tolerant Operation of Modular Multilevel Converters with an Insulated Gate Bipolar Transistor (IGBT) Open Circuit Fault. United States: N. p., Web. doi:10.3390/en11040837.
Li, Wei, Li, Gengyin, Zeng, Rong, Ni, Kai, Hu, Yihua, & Wen, Huiqing. The Fault Detection, Localization, and Tolerant Operation of Modular Multilevel Converters with an Insulated Gate Bipolar Transistor (IGBT) Open Circuit Fault. United States. doi:10.3390/en11040837.
Li, Wei, Li, Gengyin, Zeng, Rong, Ni, Kai, Hu, Yihua, and Wen, Huiqing. 2018. "The Fault Detection, Localization, and Tolerant Operation of Modular Multilevel Converters with an Insulated Gate Bipolar Transistor (IGBT) Open Circuit Fault". United States. doi:10.3390/en11040837. https://www.osti.gov/servlets/purl/1474568.
@article{osti_1474568,
title = {The Fault Detection, Localization, and Tolerant Operation of Modular Multilevel Converters with an Insulated Gate Bipolar Transistor (IGBT) Open Circuit Fault},
author = {Li, Wei and Li, Gengyin and Zeng, Rong and Ni, Kai and Hu, Yihua and Wen, Huiqing},
abstractNote = {Reliability is one of the critical issues for a modular multilevel converter (MMC) since it consists of a large number of series-connected power electronics submodules (SMs). Here in this paper, a complete control strategy including fault detection, localization, and tolerant operation is proposed for the MMC under an insulated gate bipolar transistor (IGBT) open circuit fault. According to the output characteristics of the SM with the open-circuit fault of IGBT, a fault detection method based on the circulating current and output current observation is used. In order to further precisely locate the position of the faulty SM, a fault localization method based on the SM capacitor voltage observation is developed. After the faulty SM is isolated, the continuous operation of the converter is ensured by adopting the fault-tolerant strategy based on the use of redundant modules. To verify the proposed fault detection, fault localization, and fault-tolerant operation strategies, a 900 kVA MMC system under the conditions of an IGBT open circuit is developed in the Matlab/Simulink platform. The capabilities of rapid detection, precise positioning, and fault-tolerant operation of the investigated detection and control algorithms are also demonstrated.},
doi = {10.3390/en11040837},
journal = {Energies (Basel)},
number = 4,
volume = 11,
place = {United States},
year = {2018},
month = {4}
}