High-Frequency Transient Overvoltage Analysis of MMC-HVDC Converter Valves Based on a Multi-Scale Wideband Model
External steep-front transient overvoltages may introduce high-frequency electromagnetic disturbances into modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems, resulting in additional transient voltage stresses on converter valves and their sub-modules. This paper investigates the propagat...