[1] Zhou, Y.B., Jiang, D.Z., Guo, J., et al. (2013) The Start and Stop Control for Modular Multi-Level Inverter Based HVDC Transmission System. Grid Technology, 36, 204-208.
[2] Song, P.G., Li, Y.F., Wang, L.N., Jiang, L. and Duan, C.T. (2013) Stop Strategy for MMC-HVDC Connected to Passive Network. Grid Technology, 11, 3247-3253.
[3] Dorn, J., Huang, H. and Retzmann, D. (2008) A New Voltage-Sourced Converter Topology for HVDC Applications. Cigré Session, B4-304, Paris.
[4] Xu, Z., et al. (2013) Voltage Source Converter Based High Voltage DC Transmission Systems. Mechanical Industry Press, Beijing.
[5] Guan, M.Y. and Xu, Z. (2010) The Modeling and Control of Modular Multilevel Converter Based HVDC Transmission System. Power System Automation, 19, 64-68.
[6] Tang, G.F. (2010) Voltage Source Converter Based High Voltage DC Transmission Systems. China Electric Power Press, Beijing.