TY - GEN
T1 - A voltage balancing controller with fuzzy logic strategy for neutral point clamped multilevel converter
AU - Tai, Bingyong
AU - Gao, Congzhe
AU - Liu, Xiangdong
AU - Lv, Jingliang
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014
Y1 - 2014
N2 - Neutral-point-clamped (NPC) multilevel-converter (MLC) is very popular in high voltage converters with multilevel topology. However, the dc-link capacitor voltage unbalance of this topology is a key issue in the NPC applications, and which will cause distortion and asymmetry of the output voltages, and also increase the voltage stress of power switches. In this paper, the three-level (3L) NPC with unbalance capacitor voltages is analyzed. A capacitor voltage balancing control strategy based on fuzzy logic controller (FLC) for the 3L-NPC-MLC is studied and presented. A fuzzy membership function is ratiocinated and determined, and based of which a capacitor voltage control strategy to suppress the capacitor voltage imbalance is proposed. Finally, simulation results show that both the balancing strategy and the FLC are effective.
AB - Neutral-point-clamped (NPC) multilevel-converter (MLC) is very popular in high voltage converters with multilevel topology. However, the dc-link capacitor voltage unbalance of this topology is a key issue in the NPC applications, and which will cause distortion and asymmetry of the output voltages, and also increase the voltage stress of power switches. In this paper, the three-level (3L) NPC with unbalance capacitor voltages is analyzed. A capacitor voltage balancing control strategy based on fuzzy logic controller (FLC) for the 3L-NPC-MLC is studied and presented. A fuzzy membership function is ratiocinated and determined, and based of which a capacitor voltage control strategy to suppress the capacitor voltage imbalance is proposed. Finally, simulation results show that both the balancing strategy and the FLC are effective.
UR - https://www.scopus.com/pages/publications/84922804227
U2 - 10.1109/ICEMS.2014.7013909
DO - 10.1109/ICEMS.2014.7013909
M3 - Conference contribution
AN - SCOPUS:84922804227
T3 - 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014
SP - 2490
EP - 2494
BT - 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 17th International Conference on Electrical Machines and Systems, ICEMS 2014
Y2 - 22 October 2014 through 25 October 2014
ER -