Contribution à la Gestion Optimale de l’énergie d’un Véhicule Electrique Hybride

Abstract

The main interest of a hybrid vehicle comes from its ability to consume less fuel compared to a thermal vehicle and to emit less pollutant. In this context, we studied the hybrid electric vehicle with FC system and more particularly the power stage, which is equipped with two sources of energy: fuel cell of the PEM type as main source, Ultracapacitor as secondary source or appoint and embedded power converters. This work focused on energy modeling, nonlinear characterization and sizing of FC system, UC, converters and the vehicle following an important detailed parametric study. In this thesis, we present the energy management between the different sources which required an optimal control to reduce the constraint on the FC and which led the system to follow the reference trajectories provided. Under these conditions, the approach adopted "DISM integral double sliding mode" becomes interesting, once designed; the voltage level adaptation converter between the FC system and the load will be controlled with a very significant reduction in steady state error. The control laws are validated in free mode and in connected mode according to a disturbance rejection by Matlab / Simulink.