Method and device for controlling the power available on an electric traction chain of a hybrid powertrain

A method for controlling the power available on the electric traction chain of a powertrain consisting of a combustion engine that can transmit the torque thereof to the wheels over various transmission ratios, of a first electric machine (ME) of a second electric machine (HSG) linked alternately to the input shafts of the combustion engine or of the first electric machine (ME) in the powertrain, and of a supply battery (12) for the electric machines, the supply voltage being established a DC voltage converter (13) arranged between the terminals of the battery and those of the electric machines,

• characterized in that
• the converter (13) can impose, on the electric machines, a voltage equal to that of the battery (Ubat), or a voltage (Udc) that is greater than this when the driver requests a strong acceleration, and during the combustion ratio changes.