Advanced Control Strategies of VSC Based HVDC Transmission System: Issues and Potential Recommendations. - M. A. Hannan; I. Hussin; Pin Jern Ker; Md. Murshadul Hoque; Molla S. Hossain Lipu; Aini Hussain; Mohamed Abdur Rahman; C. W. M. Faizal; Frede Blaabjerg (IEEE Access, 2018)