Modelling of Components for Conventional Car and Hybrid Electric Vehicle in Modellica
Hybrid electric vehicles have two power sources - an internal combustion
engine and an electric motor. These vehicles are of great interest because
they contribute to a decreasing fuel consumption and air pollution and
still maintain the performance of a conventional car. Different topologies
are described in this thesis and especially the series and parallel hybrid
electric vehicle and Toyota Prius have been studied.
This thesis also depicts modelling of a reference car and a series hybrid
electric vehicle in Modelica. When appropriate, models from the Modelica
standard library have been used. Models for a manual gearbox, final drive,
wheel, chassis, air drag and a driver have been developed for the reference
car.
For the hybrid electric vehicle a continuously variable transmission,
battery, an electric motor, fuel cut-off function for the internal combustion engine
and a converter that distributes the current between generator, electric
motor and internal combustion engine have been designed.
These models have been put together with models from the Modelica standard
library to a reference car and a series hybrid electric vehicle which follows
the NEDC driving cycle. A sketch for the parallel hybrid electric vehicle
and Toyota Prius have also been made in Modelica.
Developed models have been introduced into the Modelica library VehProLib,
which is a vehicle propulsion library under development by Vehicular Systems,
Linköpings universitet.
Johanna Wallén
2004
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