A method of supplying electrical power to an electric motor including phases having respective directions about a rotation axis of the electric motor and configured to carry respective phase currents defining a current vector starting from the rotation axis, the method including: switching connection of the phases to a voltage source so as to cause the current vector to turn, where the switched connection of the phases includes, during at least one turn of the current vector, for each of one or more phases: over a part of the turn, disconnecting the phase from the voltage source to open circuit the phase, and over another part of the turn, switching connection of the phase to the voltage source, and where a perpendicular to the direction of the phase passes through the part of the turn over which the phase is disconnected from the voltage source.