4Jih-Sheng Lai ,Fang Zheng Peng. Multilevel Converters-A New Breed of Power Converters[ J]. IEEE Trans on IA, 1996,32 (3) :509-517.
5Fang Zheng Peng, Jih-Sheng kai, McKeever, et al. A Multilevel Voltage Source Inverter with Separate DC Source for Static VAR Generation[ J ]. IEEE Trans on IA, 1996,32 (5) :1130-1137.
6Tolbert L M, Fang Zheng Peng, et al. Multilevel PWM methods at low modulation indices[J]. IEEE Trans on Power Electronic, 2000, 15(4) :719-725.
7Akagi H, Nabae A, Atoh S. Control strategy of active power filters using multiple voltage-source PWM converters [ J ].IEEE Trans. Ind. Appl on IA, 1986,20(3) :460-466.
8Wu Hongyang, He Xiangning. Research on PWM control of a cascade multilevel converter [ C ]. PIEMC 2000 ( 3 ) : 1099-1103.
9Corzine K,Familiant Y. A new cascaded multilevel H-bridge drive[J]. IEEE Transactions on Power Electronics: 2002, 17(1) : 125-131.
10Lai Jisheng，IEEE Trans Ind Appli，1996年，32卷，3期，509页
