TY  - SER
AU  - Dong, Peng
AU  - Lyu, Jing
AU  - Cai, Xu
TI  - Modeling, Analysis, and Enhanced Control of Modular Multilevel Converters with  Asymmetric Arm Impedance  for  Hvdc Applications
KW  - Asymmetric Arm Impedance
KW  - Capacitor Voltage Balance
KW  - Control
ER  -