Lesnicar A,Marquardt R.An innovative modular multilevel converter topology suitable for a wide power range[C].IEEE Bologna Power Tech Conference,Bologna,Italy,2003:23-26.
Yang Xiaofeng,Zheng Qionglin.A novel universal circulating current suppressing strategy based on the MMC circulating current model[J].Proceedings of the CSEE,2012,32(18):59-65.
Guan Minyuan,Xu Zheng.Modeling and control of modular multilevel converter in HVDC transmission[J].Automation of Electric Power Systems,2010,34(19):64-68.
[6]
Song H S,Nam K.Dual current control scheme for PWM converter under unbalanced input voltage conditions[J].IEEE Transactions on Industrial Electronics,1999,46(5):953-959.
Huang Fucheng,He Zhiyuan,Tang Guangfu,et al.Control strategy for the voltage source converter based HVDC transmission system under unbalanced AC grid conditions[J].Proceedings of the CSEE,2008,28(22):144-151.
Wei Xiaoyun,Sun Hui,Wei Xiaoguang,et al.Control strategy about power quality improvement for VSC-HVDC under unbalanced AC grid conditions[J].Proceedings of the CSEE,2011,31(9):8-14.
Zhang Wei,Wang Hongsheng,Ren Yuan,et al.Investigation on control of three-phase grid-connected inverters under unbalanced grid voltage conditions[J].Transactions of China Electrotechnical Society,2010,25(12):103-110.
Zhang Jianpo,Zhao Chengyong,Jing Huabing.Simulating research of proportional resonant controllers in MMC-HVDC[J].Proceedings of the CSEE,2013,33(21):53-62.
[15]
Zhou Y,Jiang D,Guo J,et al.Analysis and control of modular multilevel converters under unbalanced conditions[J].IEEE Transactions on Power Delivery,2013,28(4):1986-1995.
[16]
Moon J W,Kim C S,Park J W,et al.Circulating current control in MMC under the unbalanced voltage[J].IEEE Transactions on Power Delivery,2013,28(3):1952-1959.
Zhang Yongchang,Xie Wei,Li Zhengxi.Predictive deadbeat direct power control of PWM rectifier[J].Electric Machines and Control,2013,17(12):57-63.
[19]
Hu J,Zhu J,Dorrell D G.Model-predictive direct power control of doubly-fed induction generators under unbalanced grid voltage conditions in wind energy applications[J].IET Renewable Power Generation,2014,8(6):687-695.
[20]
Hu J,Zhu J,Dorrell D G.In-depth study of direct power control strategies for power converters[J].IET Power Electronics,2014,7(7):1810-1820.
Sun Dan,Fang Yang,Sun Shitao,et al.Dead-beat direct power control of doubly fed induction generators with delay compensation[J].Transactions of China Electrotechnical Society,2013,28(11):70-78.
[23]
Mattavelli P.An improved deadbeat control for UPS using disturbance observers[J].IEEE Transactions on Industrial Electronics,2005,52(1):206-212.
Guan Minyuan,Xu Zheng,Tu Qingrui,et al.Nearest level modulation for modular multilevel converters in HVDC transmission[J].Automation of Electric Power Systems,2010,34(2):48-52.
[26]
Tu Q,Xu Z,Xu L.Reduced switching-frequency modulation and circulating current suppression for modular multilevel converters[J].IEEE Transactions on Power Delivery,2011,26(3):2009-2017.
[27]
Shang L,Hu J.Sliding-mode-based direct power control of grid-Connected wind-turbine-driven doubly fed induction generators under unbalanced grid voltage conditions[J].IEEE Transactions on Energy Conversion,2012,27(2):362-373.
Wei Xiaoyun,Lu Ying.A unified control strategy for VSC-HVDC under unbalanced grid conditions[J].Proceedings of the CSEE,2012,32(34):50-57.
[30]
Tang L,Ooi B T.Elimination of “harmonic transfer through converters” in VSC-based multiterminal DC systems by AC/DC decoupling[J].IEEE Transactions on Power Delivery,2008,23(1):402-409.
