1. Karaagac U, Mahseredjian J, Saad H, Jensen S, Cai LJ. Examination of fault ride-through methods for off-shore wind farms connected to the grid through VSC-based HVDC transmission. In: Paper Published in 11th International Workshop on Large-Scale Integration of Wind Power into Power Systems; November 13-15, 2012; Lisbon Portugal
2. Cai LJ, Yin H, Lan YL, Lan T, Wu X, Eckel HG, et al. Sub-synchronous harmonic impedance analysis of doubly-fed induction generator wind turbine. IFAC-PapersOnLine. 2019;52(4):165-169
3. Cai LJ, Fan Z. Doubly-fed induction generator offshore wind farm with VSC-HVDC grid connection: start-up procedure. In: International Conference on Renewable Power Generation RPG. London, UK: IET; 2015
4. Bozhko SV et al. Control of offshore DFIG-based wind farm grid with line-commutated HVDC connection. IEEE Transactions on Energy Conversion. 2007;22(1):71-78
5. Hammer T, Seman S, Menke P, Hacker F, Szangolies B, Meth J, et al. Diode-Rectifier HVDC link to Onshore Power Systems: Dynamic Performance of Wind Turbine Generators and Reliability of Liquid Immersed HVDC Diode Rectifier Units, CIGRE 2016, 21, rue d’Artois, F-75008 PARIS. Paris: CIGRE;