TY - JOUR
T1 - Review of Fault Diagnosis and Fault-Tolerant Control Methods of the Modular Multilevel Converter Under Submodule Failure
AU - Xiao, Qian
AU - Jin, Yu
AU - Jia, Hongjie
AU - Tang, Yi
AU - Cupertino, Allan Fagner
AU - Mu, Yunfei
AU - Teodorescu, Remus
AU - Blaabjerg, Frede
AU - Pou, Josep
PY - 2023/10
Y1 - 2023/10
N2 - Modular multilevel converters (MMCs) have attracted extensive research interests in various ac and dc conversion applications due to their modular structure and excellent harmonic performance. However, the large number of power switches increases the potential risk of submodule (SM) failure, which greatly challenges the safe and reliable operation of the MMC. This article presents a detailed review of fault diagnosis and fault-tolerant control methods of the MMC under SM failures. On this basis, comprehensive comparisons are conducted among different fault diagnosis methods, and verification results are provided to analyze the advantages and disadvantages of the popular fault-tolerant control methods. Finally, the review is concluded, and future trends and research opportunities are discussed.
AB - Modular multilevel converters (MMCs) have attracted extensive research interests in various ac and dc conversion applications due to their modular structure and excellent harmonic performance. However, the large number of power switches increases the potential risk of submodule (SM) failure, which greatly challenges the safe and reliable operation of the MMC. This article presents a detailed review of fault diagnosis and fault-tolerant control methods of the MMC under SM failures. On this basis, comprehensive comparisons are conducted among different fault diagnosis methods, and verification results are provided to analyze the advantages and disadvantages of the popular fault-tolerant control methods. Finally, the review is concluded, and future trends and research opportunities are discussed.
KW - Fault detection
KW - fault diagnosis
KW - fault localization
KW - fault-tolerant
KW - modular multilevel converter (MMC)
KW - submodule (SM) failure
UR - http://www.scopus.com/inward/record.url?scp=85161569646&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2023.3283286
DO - 10.1109/TPEL.2023.3283286
M3 - Journal article
SN - 0885-8993
VL - 38
SP - 12059
EP - 12077
JO - I E E E Transactions on Power Electronics
JF - I E E E Transactions on Power Electronics
IS - 10
M1 - 10144660
ER -