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This thesis has been carried out to investigate a few areas concerning electric
and hybrid electric powered land vehicles. The main objective has been
to analyze the effciency of such power trains to compare them with canonical
combustion engines, both in a tank-to-wheels basis and a well-to-wheels
basis. One of the question formulations is if an electric or plug-in hybrid
electric vehicle charged by public electricity generated by a fossil plant will
result in any environmental alleviation at all, in excess of reducing the local
tailpipe pollution. To establish reasonable gures about a car’s energy
consumption in dynamic drive cycles such as the NEDC and the US06, a
comprehensive simulation model has been used. The simulation results are
presented as an analysis of waste energy, directly leading to an estimation of
the potential of hybrid electric locomotion as a method to save energy and
thus fuel. To form an overview about the new emerging market of hybrid
electric vehicles, some of the topical key power train components are briefly
discussed; combustion engines, electric machines, supercapacitors and batteries.
The overview is rounded o with a brief discussion about motives
behind the popularity of hybrid propulsion as well as some economical aspects
from an end user point of view.

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