8Tolbert L M,Peng Fangzheng,Cunnyngham T,et al.ChargeBalance Control Schemes for Multilevel Converter in HybridElectric Vehicles[J].Industrial Electronics,IEEE Transac-tions on,2002,49(5):1058-1064.
9Chen Yonggang,Wang Ping,Li Yaohua,et al.A Novel Hy-brid Modulation Method for Cascaded H-bridge Active PowerFilter[C]//Power Electronics and Motion Control Confer-ence,2008:1981-1986.
10Bingsen W,Venkataramanan G,Illindala M.Operation andControl of a Dynamic Voltage Restorer Using TransformerCoupled H-bridge Converters[J].IEEE Transactions on Pow-er Electronics,2006,21(4):1053-1061.
