Control method implemented for an electric motor control installation, said control installation comprising: - A first converter (CONV1) having controlled switching arms for applying voltage pulses, each having a voltage rising edge and a voltage falling edge, to a first electric motor connected to said first converter by first output phases, - A second converter (CONV2) having controlled switching arms for applying voltage pulses, each having a voltage rising edge and a voltage falling edge, to a second electric motor connected to said second converter by second output phases, - Said first converter and said second converter being connected in parallel to one and the same DC supply bus supplying a DC voltage, - For each voltage pulse, the voltage rising edge and the voltage falling edge are determined from pulse-width modulation of intersective type between an asymmetric type carrier and two modulants, - the control method including a pulse synchronization step in order to minimize the common-mode currents generated by said installation, Said method being characterized in that the synchronization step, over a switching period, consists in: - Positioning pulses by determining, for each pulse, the two modulants required for its positioning, - Determining, over a switching period, the modulants so that, for a voltage pulse to be generated by controlling a switching arm of the first converter, the generation of the voltage rising edge for this pulse coincides with the generation of a voltage falling edge of a pulse to be generated by one switching arm of the second converter, and the generation of the voltage falling edge of this pulse coincides with the generation of a voltage rising edge of another pulse to be generated by another switching arm of the second converter. - A first converter (CONV1) having controlled switching arms for applying voltage pulses, each having a voltage rising edge and a voltage falling edge, to a first electric motor connected to said first converter by first output phases, - A second converter (CONV2) having controlled switching arms for applying voltage pulses, each having a voltage rising edge and a voltage falling edge, to a second electric motor connected to said second converter by second output phases, - Said first converter and said second converter being connected in parallel to one and the same DC supply bus supplying a DC voltage, - For each voltage pulse, the voltage rising edge and the voltage falling edge are determined from pulse-width modulation of intersective type between an asymmetric type carrier and two modulants, - the control method including a pulse synchronization step in order to minimize the common-mode currents generated by said installation, - Positioning pulses by determining, for each pulse, the two modulants required for its positioning, - Determining, over a switching period, the modulants so that, for a voltage pulse to be generated by controlling a switching arm of the first converter, the generation of the voltage rising edge for this pulse coincides with the generation of a voltage falling edge of a pulse to be generated by one switching arm of the second converter, and the generation of the voltage falling edge of this pulse coincides with the generation of a voltage rising edge of another pulse to be generated by another switching arm of the second converter.