Inspec keywords: fault diagnosis; failure analysis; HVDC power transmission; HVDC power convertors; power convertors

Other keywords: fault blocking capability; full-bridge sub-modules; full-bridge sub-module capacitors; hybrid modular multilevel converter; short-circuiting; proportion; hybrid MMC-isolated DC side; DC bipolar short-circuit fault; fault-blocking mechanism; hybrid MMC DC-side bipolar short-circuit fault; fault isolation capability; flexible DC distribution system; fault isolation phase

Subjects: d.c. transmission; Power convertors and power supplies to apparatus; Control of electric power systems