Abstract
This paper deals with the development of a prototype of Hybrid Solar Vehicle (HSV) with series structure. This activity has been also conducted in the framework of the European Union funded Leonardo project “Energy Conversion Systems and Their Environmental Impact”, a project with research and educational objectives. A study on supervisory control for hybrid solar vehicles and some preliminary tests performed on the road are presented. Previous results obtained by a model for HSV optimal design have confirmed the relevant benefits of such vehicles with respect to conventional cars in case of intermittent use in urban driving (city-car), and that economical feasibility could be achieved in a near future. Due to the series-powertrain adopted for the HSV prototype, an intermittent use of the ICE (Internal Combustion Engine) powering the electric generator is possible, thus avoiding part-load low-efficient engine operations. The best ICE power trajectory is determined via genetic algorithm optimization accounting for fuel mileage as well as battery state of charge, also considering solar contribution during parking mode. The experimental set up used for data logging, real-time monitoring and control of the prototype is also presented, and the results obtained with different road tests discussed.
Highlights
Sustainable Mobility issues are gaining increasing attention both among specialists and in public opinion, due to the major impact of automotive systems on carbon dioxide production, climate changes and fossil fuel depletion
The Hybrid Solar Vehicle (HSV) prototype has been equipped with a programmable NI-cRio® control unit, which interfaces with the real system to pursue the following aims: a
Internal Combustion Engine (ICE) start&stop strategy can be introduced depending on online estimation of current state of charge, which was performed by implementing the battery model in LabView-cRio environment®
Summary
Sustainable Mobility issues are gaining increasing attention both among specialists and in public opinion, due to the major impact of automotive systems on carbon dioxide production, climate changes and fossil fuel depletion. This paper deals with modeling, on-board energy management and performance evaluation for a prototype of Hybrid Solar Vehicle with series structure. This activity has been started in the framework of the UE funded Leonardo project “Energy Conversion Systems and Their Environmental Impact” [8], a project with research and educational objectives. With this approach, the photovoltaic panels PV (placed on vehicle roof as shown in Fig. 1) assist the Electric Generator EG, powered by an Internal Combustion Engine (ICE), in recharging the Battery pack (B) in both parking mode and driving conditions, through the Electric Node (EN).
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