Modeling and Control of a Hybrid Propulsion System for an Agricultural Tractor

The goal of this thesis is to find new strategies in order to control the torque boosting in an hybrid architecture that is made up by an electric path and a mechanical one. As regards the first one, the main subsystems involved are: Three-Phase Synchronous Generator, Electric Generator Control, Supercapacitor, Electric Motor Control, Three-Phase Synchronous Electric Motor. In the mechanical path, instead, the main subsystems involved are: ICE (Internal Combustion Engine), Gearbox and Mechanical Dynamics. The model is described by using the POG (Power Oriented Graph) technique which perform the modeling of the physical system under consideration. In order to provide the effectiveness of the entire architecture several simulations are performed and the results are commented in detail.