The present invention relates to a control system for an electric charge, said system comprising: —A first power converter (VV1) and a second power converter (VV2) connected in parallel, —A first control unit (UC1) associated with the first power converter and a second control unit (UC2) associated with the second power converter, —The second control unit (UC2) comprises a main control module (M1_2) for determining a second output voltage (vσ2) to apply the electric charge and a secondary control module (M2_2) to determine a control voltage (Δvσk) to be applied to said second output voltage (vσ2), said control voltage being determined from the difference between the output current (iσ2) of the second power converter and the output current (iσ1) of the first power converter.