TY - GEN
T1 - A Fast and Generalized Space-Vector Modulation Scheme for Cascaded H-bridge Multilevel Converters Under Faulty Conditions
AU - Wang, Wanxing
AU - Zhang, Yan
AU - Xiao, Chaomin
AU - Li, Yang
AU - Ma, Chaoqun
AU - Liu, Jinjun
N1 - Publisher Copyright:
© 2023 The Korean Institute of Power Electronics.
PY - 2023
Y1 - 2023
N2 - Space vector modulation (SVM) is widely used for voltage source inverters, but it is too complicated when extended to the cascaded H-bridge multilevel converter (CHMC) under faulty conditions. In this article, a fast and universal SVM strategy is proposed to realize POSTFAULT operation for CHMC. Different fault types can be reflected by the reduction of phase voltage so the proposed scheme first calculates all the available redundant switching states based on available output voltage in three phases. Final-selected switching state is within the selectable range based on the reduced common-mode voltage principle. To generate the switching sequence, discontinuous pulse-width modulation (DPWM) is used, which improves efficiency of the system. The proposed SVM scheme is independent of the number of levels and can be applied in different fault conditions. The performance and effectiveness of the proposed strategy are verified by simulation results.
AB - Space vector modulation (SVM) is widely used for voltage source inverters, but it is too complicated when extended to the cascaded H-bridge multilevel converter (CHMC) under faulty conditions. In this article, a fast and universal SVM strategy is proposed to realize POSTFAULT operation for CHMC. Different fault types can be reflected by the reduction of phase voltage so the proposed scheme first calculates all the available redundant switching states based on available output voltage in three phases. Final-selected switching state is within the selectable range based on the reduced common-mode voltage principle. To generate the switching sequence, discontinuous pulse-width modulation (DPWM) is used, which improves efficiency of the system. The proposed SVM scheme is independent of the number of levels and can be applied in different fault conditions. The performance and effectiveness of the proposed strategy are verified by simulation results.
KW - Space vector modulation (SVM)
KW - cascaded H-bridge multilevel converter (CMMC)
KW - failure conditions
KW - fault-tolerant operation
UR - https://www.scopus.com/pages/publications/85170642392
U2 - 10.23919/ICPE2023-ECCEAsia54778.2023.10213474
DO - 10.23919/ICPE2023-ECCEAsia54778.2023.10213474
M3 - 会议稿件
AN - SCOPUS:85170642392
T3 - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics
SP - 1066
EP - 1071
BT - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th International Conference on Power Electronics - ECCE Asia, ICPE 2023-ECCE Asia
Y2 - 22 May 2023 through 25 May 2023
ER -