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In this paper two tapping topologies will be compared in terms of efficiency and utilization of the installed semiconductors. Both topologies consist of a shunt connected two stage concept with a resonant DC/DC converter, followed by a medium power inverter on the low voltage side to supply an AC grid.
Voltage ratings for HVdc point-to-point connections are not standardized and tend to depend on the latest available cable technology. DC/DC conversion at HV is required for interconnection of such HVdc schemes as well as to interface dc wind farms. Modular multilevel voltage source converters (VSCs), such as the modular multilevel converter (MMC) or the alternate arm converter (AAC), have been shown...
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