• Control
• Hybrid
• Modeling
• Propulsion
• Saving

This work of thesis deals with the modeling and the control of a
hybrid propulsion system for a wheel loader by adopting a series
architecture. The main subsystems that are involved are: ICE (which
stands for Internal Combustion Engine), Three-Phase Synchronous
Generator, Vectorial Rectifier, Electric Motor Control, Three-Phase
Synchronous Electric Motor, Mechanical Dynamics. The POG (standing
for Power Oriented Graph) technique is employed to perform the
modeling of the physical systems composing the architecture, such as
the kinematic chain of the transmission system, the three-phase
synchronous electric machine employed as a motor, the three-phase
synchronous electric machine employed as a generator and the
discrete-time vectorial rectifier. The control structure is
subdivided into two parts: the control of the electric machines
working as motors, which is performed by employing a vectorial
control strategy, and the control of the ICE/Generator subsystems.
The latter consists in the development of the control strategy
through which the ICE recharges the supercapacitor, i.e. the element
which is responsible for energy storing. Several simulations showing
the effectiveness of the presented hybrid architecture are performed
and the results are analyzed and commented in detail.

This work of thesis deals with the modeling and the control of a hybrid propulsion system for a wheel loader by adopting a series architecture. The main subsystems that are involved are: ICE (which stands for Internal Combustion Engine), Three-Phase Synchronous Generator, Vectorial Rectifier, Electric Motor Control, Three-Phase Synchronous Electric Motor, Mechanical Dynamics. The POG (standing for Power Oriented Graph) technique is employed to perform the modeling of the physical systems composing the architecture, such as the kinematic chain of the transmission system, the three-phase synchronous electric machine employed as a motor, the three-phase synchronous electric machine employed as a generator and the discrete-time vectorial rectifier. The control structure is subdivided into two parts: the control of the electric machines working as motors, which is performed by employing a vectorial control strategy, and the control of the ICE/Generator subsystems. The latter consists in the development of the control strategy through which the ICE recharges the supercapacitor, i.e. the element which is responsible for energy storing. Several simulations showing the effectiveness of the presented hybrid architecture are performed and the results are analyzed and commented in detail.