Device and method for control of an electric power converter and converter comprising such a device

Device for control of an electric power converter comprising control means for controlling turn-on of semi-conductor legs,

• said electric power converter comprising:
• DC voltage supply lines,
• conversion means having at least three legs connected between said DC voltage supply lines and outputs to convert said DC voltage into output AC voltages, and
• control means for controlling turn-on of said legs of the conversion means,
• said control means comprising:
• processing means to supply modulation signals of control signals of said legs,
• means for determining a general control component for processing an over-modulation, said general control component being determined according to first modulation signals of the legs of the conversion means to process second modulation signals of the legs of the conversion means
• wherein said means for determining comprise means for detecting a detection signal detecting current flowing in the outputs of the legs of said converter to be used in selection of at least one modulation signal receiving an over-modulation, said means for determining determining said general control component according to the first modulation signals and according to said detection signal detected by the means for detecting.