TY - GEN
T1 - Capacitor Voltage Control for T-type Alternate Arm Multilevel Converter
AU - Wang, Yinzhou
AU - Yang, Heya
AU - Zeng, Ping
AU - Fan, Shiyuan
AU - Zhang, Xiaotian
AU - Xiang, Xin
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - T-type alternate arm multilevel converter (T-AAMC) is a cost-effective three-arm multilevel converter with DC fault ride-through capability. The current commutation modulation (CMM) can break the energy balance restriction for T-AAMC with considering the arm inductor. In this paper, the current commutation process for T-AAMC is firstly explored and derived by analytical expressions. Furthermore, the mechanism of the capacitor voltage sag caused by commutation process is clarified, which provides the fundamental to design the controller. Then, the capacitor voltage control (CVC) for T-AAMC is proposed for the capacitor voltage sag to achieve the normal operating in the four quadrants. Finally, the simulation and experimental results are performed to verify the effectiveness of the proposed control strategy.
AB - T-type alternate arm multilevel converter (T-AAMC) is a cost-effective three-arm multilevel converter with DC fault ride-through capability. The current commutation modulation (CMM) can break the energy balance restriction for T-AAMC with considering the arm inductor. In this paper, the current commutation process for T-AAMC is firstly explored and derived by analytical expressions. Furthermore, the mechanism of the capacitor voltage sag caused by commutation process is clarified, which provides the fundamental to design the controller. Then, the capacitor voltage control (CVC) for T-AAMC is proposed for the capacitor voltage sag to achieve the normal operating in the four quadrants. Finally, the simulation and experimental results are performed to verify the effectiveness of the proposed control strategy.
KW - commutation process
KW - control strategy
KW - sub-module capacitor voltage
KW - T-type alternate arm multilevel converter
UR - https://www.scopus.com/pages/publications/85170361013
U2 - 10.1109/PEDG56097.2023.10215172
DO - 10.1109/PEDG56097.2023.10215172
M3 - 会议稿件
AN - SCOPUS:85170361013
T3 - PEDG 2023 - 2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems
SP - 87
EP - 93
BT - PEDG 2023 - 2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2023
Y2 - 9 June 2023 through 12 June 2023
ER -
