Riassunto analitico
The growing number of vehicles used for individual and commercial transport has resulted in a rapid expansion in the energy requirements within this industry. Currently, over 30% of the global primary energy production is consumed by this sector. Due to the predominant dependence on fossil fuels, the energy supply system is both environmentally harmful and unsustainable in the long term. Vehicle manufacturers have not only made technical advancements to classic internal combustion engines, but they have also invested in research and development of propulsive technologies that can use alternate energy sources. Progressing along this trajectory, the electric alternative appears to be the most auspicious. Unfortunately, however, electric vehicles presently do not ensure a range that is similar to that of conventional vehicles. Moreover, electricity is classified as a secondary source, meaning that a decrease in pollutant emissions would only occur if the energy mix utilised to generate electricity relied on renewable sources. Hybrid cars in this context are created by merging two or more different propulsion systems. This thesis project presents a modular approach for modelling hybrid electric vehicles. In pursuing this purpose, all the logical and physical elements of a vehicle has been modelled with a systemic perspective and implemented in the Matlab/Simulink® environment, under a set of simplifying assumptions consistent with the analysis method used. The developed model can be used for a variety of applications, ranging from concept development to software validation. Finally, two case studies are reported.
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Abstract
The growing number of vehicles used for individual and commercial transport has resulted in a rapid expansion in the energy requirements within this industry. Currently, over 30% of the global primary energy production is consumed by this sector. Due to the predominant dependence on fossil fuels, the energy supply system is both environmentally harmful and unsustainable in the long term. Vehicle manufacturers have not only made technical advancements to classic internal combustion engines, but they have also invested in research and development of propulsive technologies that can use alternate energy sources. Progressing along this trajectory, the electric alternative appears to be the most auspicious. Unfortunately, however, electric vehicles presently do not ensure a range that is similar to that of conventional vehicles. Moreover, electricity is classified as a secondary source, meaning that a decrease in pollutant emissions would only occur if the energy mix utilised to generate electricity relied on renewable sources. Hybrid cars in this context are created by merging two or more different propulsion systems. This thesis project presents a modular approach for modelling hybrid electric vehicles. In pursuing this purpose, all the logical and physical elements of a vehicle has been modelled with a systemic perspective and implemented in the Matlab/Simulink® environment, under a set of simplifying assumptions consistent with the analysis method used. The developed model can be used for a variety of applications, ranging from concept development to software validation. Finally, two case studies are reported.
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