Power control method of a triphase electric motor from a DC voltage source and device for its implementation.

A method of controlling the supply of a three-phase electric motor (16) from a DC voltage source (14), comprising a step of determining engine operating conditions in which assigns values ​​to the parameters ( id *, iq *) for controlling the motor corresponding to these operating conditions, characterized in that it comprises: - a test stage to determine whether values ​​assigned to the control parameters are adapted to a characteristic of the voltage source continuous, powerful if this test step is negative, a step of modifying the values ​​assigned to the control parameters, a powerful engine operation step in the operating conditions defined by the values ​​assigned to the control parameters.