TY - GEN
T1 - An IGBT open-circuit fault detection method for modular multilevel converters
AU - Li, Binbin
AU - Zhang, Yi
AU - Yang, Rongfeng
AU - Wang, Gaolin
AU - Xu, DIanguo
N1 - Publisher Copyright:
© 2015 Korean Institute of Power Electronics.
PY - 2015/7/27
Y1 - 2015/7/27
N2 - Recently, the modular multilevel converter (MMC) has attracted increasing attentions due to its distinctive features, especially in the application of HVDC power transmission. One of the most significant characteristic of MMC is that it is composed of identical low-voltage submodules (SMs). As a result, the low-voltage IGBTs can be employed in each SM as the main power switch. However, since an MMC station usually contains hundreds of SMs, the IGBT becomes the most fragile component. In this paper, the failure characteristics of the IGBT open-circuit fault in a SM are firstly analyzed. Then, an observer-based IGBT open-circuit detection method is proposed, which can accurately detect the fault by comparing the estimated values with the actual sampled values. Finally, the validity and effectiveness of the proposed fault detection method are demonstrated by experimental results based on a single-phase MMC prototype in the laboratory.
AB - Recently, the modular multilevel converter (MMC) has attracted increasing attentions due to its distinctive features, especially in the application of HVDC power transmission. One of the most significant characteristic of MMC is that it is composed of identical low-voltage submodules (SMs). As a result, the low-voltage IGBTs can be employed in each SM as the main power switch. However, since an MMC station usually contains hundreds of SMs, the IGBT becomes the most fragile component. In this paper, the failure characteristics of the IGBT open-circuit fault in a SM are firstly analyzed. Then, an observer-based IGBT open-circuit detection method is proposed, which can accurately detect the fault by comparing the estimated values with the actual sampled values. Finally, the validity and effectiveness of the proposed fault detection method are demonstrated by experimental results based on a single-phase MMC prototype in the laboratory.
KW - Fault detection
KW - modular multilevel converter (MMC)
KW - open circuit fault
KW - submodule (SM)
UR - https://www.scopus.com/pages/publications/84961929537
U2 - 10.1109/ICPE.2015.7167986
DO - 10.1109/ICPE.2015.7167986
M3 - Conference article published in proceeding or book
AN - SCOPUS:84961929537
T3 - 9th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2015-ECCE Asia
SP - 1573
EP - 1578
BT - 9th International Conference on Power Electronics - ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th International Conference on Power Electronics - ECCE Asia, ICPE 2015-ECCE Asia
Y2 - 1 June 2015 through 5 June 2015
ER -