Active Power Decoupling for a Modified Modular Multilevel Converter to Decrease Submodule Capacitor Voltage Ripples and Power Losses

The usage of too many sizeable capacitors significantly increases the volume and cost of the modular multilevel converter (MMC), and limits its spread in medium- and high-voltage applications. By adding a buck-type active power filter (APF) circuit into a particular MMC topology [of which each phase... View More