TY - GEN
T1 - A novel capacitor voltage balancing method for an improved MMC circuit with three-level middle modules
AU - Liu, Teng
AU - Liu, Jinjun
AU - Du, Sixing
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/12/18
Y1 - 2015/12/18
N2 - Modular multilevel converter (MMC) has become a promising multilevel topology for high-power applications in recent years. This paper proposes a novel capacitor voltage balancing method for an improved MMC circuit with a three-level neutral-point-clamped (NPC) module connected upper arm to lower arm in each phase, which possesses the merit of saving two half-bridge sub-modules (SMs) for each phase compared with the conventional MMC topology when generating the same number of output voltage levels. To make sure that the output voltage of this novel MMC keeps the same with that of the conventional MMC, this paper combines phase-shift carrier PWM (PS-PWM) with phase-opposition-disposition carrier PWM (POD-PWM) as the modulation strategy. Further, the proposed capacitor voltage balancing method based on adjusting the modulation wave mainly focuses on the neutral point voltage balancing of the NPC module and the voltage balancing between the NPC module and arms. Simulation results verify the effectiveness of the proposed capacitor voltage balancing method.
AB - Modular multilevel converter (MMC) has become a promising multilevel topology for high-power applications in recent years. This paper proposes a novel capacitor voltage balancing method for an improved MMC circuit with a three-level neutral-point-clamped (NPC) module connected upper arm to lower arm in each phase, which possesses the merit of saving two half-bridge sub-modules (SMs) for each phase compared with the conventional MMC topology when generating the same number of output voltage levels. To make sure that the output voltage of this novel MMC keeps the same with that of the conventional MMC, this paper combines phase-shift carrier PWM (PS-PWM) with phase-opposition-disposition carrier PWM (POD-PWM) as the modulation strategy. Further, the proposed capacitor voltage balancing method based on adjusting the modulation wave mainly focuses on the neutral point voltage balancing of the NPC module and the voltage balancing between the NPC module and arms. Simulation results verify the effectiveness of the proposed capacitor voltage balancing method.
UR - https://www.scopus.com/pages/publications/84962343617
U2 - 10.1109/IFEEC.2015.7361562
DO - 10.1109/IFEEC.2015.7361562
M3 - 会议稿件
AN - SCOPUS:84962343617
T3 - 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015
BT - 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd IEEE International Future Energy Electronics Conference, IFEEC 2015
Y2 - 1 November 2015 through 4 November 2015
ER -
