Method for controlling current and voltage of submodule for modular multilevel converter and control module performing the same

摘要

The present invention provides a method for controlling a submodule current and voltage for testing a submodule of a modular multilevel converter, comprising: a current offset generation step of generating a current offset included in the current supplied to the submodule; A second harmonic generation step of generating a second harmonic current included in the current supplied to the submodule; And a current control signal forming step for controlling the dark current IL to be supplied to the sub module by using the dark current IL received feedback from the sub module, the current offset, and the second harmonic current. Disclosed is a method of controlling module current and voltage.