Low-voltage fault ride through of the modular multilevel converter in a battery energy storage system connected directly to the medium voltage grid

Abstract

Nowadays, even small and medium sized power generators are required to ride through low-voltage faults without disconnecting themselves from the grid. To the modular multilevel converter (MMC) in a battery energy storage system based on split batteries (sBESS), this presents a unique requirement: In case of a low-voltage grid-fault, the arm voltages leave… (More)

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