A survey on modeling, control, and dc-fault protection of modular multilevel converters for HVDC systems. - Mohammad Sleiman; Ali Al Hage Ali; Handy Fortin-Blanchette; Kamal Al-Haddad; Bernhard Piepenbreier; Hadi Youssef Kanaan (ISIE, 2014)

A multiple model approach to fault detection and localization in multi-terminal HVDC systems. - Ali Al Hage Ali; Bernhard Piepenbreier; Dominic Buchstaller; Markus Engel (IECON, 2015)