Modelling of Generic Hybrid Electric Vehicles

The software development of the control functions will be a large part of the work when developing future vehicles. Therefore, it is of great importance to be able to reuse the control architecture for different hardware configurations. In this work, a generic 1 control architecture for Hybrid Electric Vehicles has been modelled with Modelica. Functional decomposition was used to develop the generic control architecture. Functions are identified and placed into a hierarchical partitioning structure. Three functional levels are suggested; main control level, subsystem level, and actuator/sensor level. The main control contains a driver interpreter, energy management, vehicle motion control and a strategic control. These main functions are made independent of hardware and of hybrid configuration. The subsystem level contains driver interface, chassis, power supply and auxiliary systems. Two models, a parallel and a series hybrid electric vehicle, are used to demonstrate the implemented architecture.