The main problem with Hybrid Electric Vehicles (HEV) is the management of batteries. We suggest to replace the batteries by an energy storage ystem made of supercapacitors on a series HEV with two traction drive. A maximum Control Structure (MCS) of such an HEV is presented to organize the control of the different subsystems. MCS is based on specific inversion rules of Energetic Macroscopic Representation (EMR). This methodology leads to a global model of the system and its deduced control. Moreover, this enable to identify precisely the maximum control for the chopper associated with the supercapacitors. The simulation of an Extra Urban Driving Cycle (EUDC) is provided.