TY - GEN
T1 - Design of Main Circuit Parameters for Sparse AC/AC Modular Multilevel Converter
AU - Gan, Runcheng
AU - Zhao, Boyang
AU - Li, Jing
AU - Zhang, Peng
AU - Wang, Xiuli
AU - Wang, Xifan
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - The fractional frequency transmission system (FFTS) is well-suited for long-distance, high-capacity power transmission. However, as the most widely used converter in FFTS, M3C suffers from poor cost-effectiveness. Among new AC/AC converters, the sparse AC/AC modular multilevel converter (SMMC) requires fewer power devices and lower investment, demonstrating significant potential for applications in FFTS. In this paper, the main circuit parameter design methods of SMMC are proposed. Based on maximum arm voltage, the number of HBSM and FBSM can be selected. The expressions of the HBSM and FBSM capacitor voltage are deduced to design the capacitance. A selection approach for the arm inductance is proposed to limit the circulating current. Finally, a case study of SMMC application in FFTS is given.
AB - The fractional frequency transmission system (FFTS) is well-suited for long-distance, high-capacity power transmission. However, as the most widely used converter in FFTS, M3C suffers from poor cost-effectiveness. Among new AC/AC converters, the sparse AC/AC modular multilevel converter (SMMC) requires fewer power devices and lower investment, demonstrating significant potential for applications in FFTS. In this paper, the main circuit parameter design methods of SMMC are proposed. Based on maximum arm voltage, the number of HBSM and FBSM can be selected. The expressions of the HBSM and FBSM capacitor voltage are deduced to design the capacitance. A selection approach for the arm inductance is proposed to limit the circulating current. Finally, a case study of SMMC application in FFTS is given.
KW - fractional frequency transmission system
KW - main circuit parameter design
KW - SMMC
UR - https://www.scopus.com/pages/publications/105033522609
U2 - 10.1109/SPET67577.2025.11335422
DO - 10.1109/SPET67577.2025.11335422
M3 - 会议稿件
AN - SCOPUS:105033522609
T3 - 2025 IEEE International Conference on Smart Power and Energy Technologies, IEEE SPET 2025
BT - 2025 IEEE International Conference on Smart Power and Energy Technologies, IEEE SPET 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE International Conference on Smart Power and Energy Technologies, IEEE SPET 2025
Y2 - 19 September 2025 through 20 September 2025
ER -