TY - GEN
T1 - An improved high-frequency common-mode voltage injection method in modular multilevel converter in motor drive application
AU - Song, Shuguang
AU - Liu, Jinjun
AU - Ouyang, Shaodi
AU - Chen, Xingxing
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/4/18
Y1 - 2018/4/18
N2 - This paper discusses the application of Modular Multilevel Converter (MMC) in motor drive. In the startup and low-speed operation, large capacitor voltage ripples appear in MMC. This paper proposes an improved high-frequency common-mode voltage injection method. In the improved method, the amplitude of injected voltage is varying according to the instantaneous value of the output voltage, and it can take full use of the arm voltage margin. This will lead to further reduction in the circulating current and higher efficiency. Both three-phase and single-phase cases are discussed, and comparisons are made between the existing control method and the improved one. This method can be more effective in the single-phase system since there is no interaction of three-phase output voltages. MMC simulation model built in PSCAD/EMTDC verifies the validity.
AB - This paper discusses the application of Modular Multilevel Converter (MMC) in motor drive. In the startup and low-speed operation, large capacitor voltage ripples appear in MMC. This paper proposes an improved high-frequency common-mode voltage injection method. In the improved method, the amplitude of injected voltage is varying according to the instantaneous value of the output voltage, and it can take full use of the arm voltage margin. This will lead to further reduction in the circulating current and higher efficiency. Both three-phase and single-phase cases are discussed, and comparisons are made between the existing control method and the improved one. This method can be more effective in the single-phase system since there is no interaction of three-phase output voltages. MMC simulation model built in PSCAD/EMTDC verifies the validity.
KW - Circulating current reduction
KW - Improved high-frequency injection
KW - Modular multilevel converter (MMC)
KW - Motor drive
KW - Voltage ripples
UR - https://www.scopus.com/pages/publications/85046936379
U2 - 10.1109/APEC.2018.8341368
DO - 10.1109/APEC.2018.8341368
M3 - 会议稿件
AN - SCOPUS:85046936379
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 2496
EP - 2500
BT - APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018
Y2 - 4 March 2018 through 8 March 2018
ER -