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The balancing of sub-module capacitor voltages of modular multi-level converters (MMC) is considered to be an essential process for keeping the quality of the output power at considerable limits. This paper presents a new capacitor voltage estimation technique which feeds the capacitor voltage balancing control. This strategy not only eliminates the need for measuring the sub-module capacitor voltages...
Multi-terminal direct current (MTDC) grids are gaining the interest of many researchers because of their unique features that improve the transmission network functionality and reliability. Unlike two level and three level voltage source converters (VSC), modular multi-level converters (MMC) are suitable for the application of MTDC grids because of their generous advantages such as the elimination...
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