Modular multilevel voltage converter and method for controlling a modular multilevel voltage converter

摘要

The invention relates to a modular multilevel converter (10) including a control module (12) for regulating the internal energy stored in the sub-module capacitors of a converter arm, the control module being suitable for limiting the internal energy below upper limit and / or above a lower limit using parameters measured on the dc power supply network (110) and the ac power supply network (120) together with setpoints for the operating power of the drive.