A Compact MMC Submodule Structure With Reduced Capacitor Size Using the Stacked Switched Capacitor Architecture

Abstract

Modular multilevel converters (MMCs) are being developed for the grid connection of offshore wind or tidal farms. In order to reduce the construction and maintenance costs, it is desirable to reduce the weight and volume of the system. In current MMC submodule designs, the reservoir capacitor usually accounts for over 50% of the total volume and 80% of… (More)

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