TY - JOUR
T1 - A control method for voltage balancing in modular multilevel converters
AU - Deng, Fujin
AU - Chen, Zhe
PY - 2014/1
Y1 - 2014/1
N2 - The modular multilevel converter (MMC) is attractive for medium- or high-power applications because of the advantages of its high modularity, availability, and high power quality. The voltage balancing of the floating capacitors in the cascaded submodules of the MMC is a key issue. In this paper, a voltage-balancing control method is proposed. This method uses the phase-shifted carrier-based pulsewidth modulation scheme to control high-frequency current components for capacitor voltage balancing in the MMC without measuring the arm currents. Simulations and experimental studies of the MMC were conducted, and the results confirm the effectiveness of the proposed capacitor voltage-balancing control method.
AB - The modular multilevel converter (MMC) is attractive for medium- or high-power applications because of the advantages of its high modularity, availability, and high power quality. The voltage balancing of the floating capacitors in the cascaded submodules of the MMC is a key issue. In this paper, a voltage-balancing control method is proposed. This method uses the phase-shifted carrier-based pulsewidth modulation scheme to control high-frequency current components for capacitor voltage balancing in the MMC without measuring the arm currents. Simulations and experimental studies of the MMC were conducted, and the results confirm the effectiveness of the proposed capacitor voltage-balancing control method.
KW - Capacitor voltage balancing
KW - Control method
KW - Modular multilevel converter
U2 - 10.1109/TPEL.2013.2251426
DO - 10.1109/TPEL.2013.2251426
M3 - Journal article
SN - 0885-8993
VL - 29
SP - 66
EP - 76
JO - I E E E Transactions on Power Electronics
JF - I E E E Transactions on Power Electronics
IS - 1
ER -