Analysis of On-Board Photovoltaics for a Battery Electric Bus and Their Impact on Battery Lifespan†
AbstractHeavy-duty electric powertrains provide a potential solution to the high emissions and low fuel economy of trucks, buses, and other heavy-duty vehicles. However, the cost, weight, and lifespan of electric vehicle batteries limit the implementation of such vehicles. This paper proposes supplementing the battery with on-board photovoltaic modules. In this paper, a bus model is created to analyze the impact of on-board photovoltaics on electric bus range and battery lifespan. Photovoltaic systems that cover the bus roof and bus sides are considered. The bus model is simulated on a suburban bus drive cycle on a bus route in Davis, CA, USA for a representative sample of yearly weather conditions. Roof-mounted panels increased vehicle driving range by 4.7% on average annually, while roof and side modules together increased driving range by 8.9%. However, variations in weather conditions meant that this additional range was not reliably available. For constant vehicle range, rooftop photovoltaic modules extended battery cycle life by up to 10% while modules on both the roof and sides extended battery cycle life by up to 19%. Although side-mounted photovoltaics increased cycle life and range, they were less weight- and cost-effective compared to the roof-mounted panels. View Full-Text
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Mallon, K.R.; Assadian, F.; Fu, B. Analysis of On-Board Photovoltaics for a Battery Electric Bus and Their Impact on Battery Lifespan. Energies 2017, 10, 943.
Mallon KR, Assadian F, Fu B. Analysis of On-Board Photovoltaics for a Battery Electric Bus and Their Impact on Battery Lifespan. Energies. 2017; 10(7):943.Chicago/Turabian Style
Mallon, Kevin R.; Assadian, Francis; Fu, Bo. 2017. "Analysis of On-Board Photovoltaics for a Battery Electric Bus and Their Impact on Battery Lifespan." Energies 10, no. 7: 943.
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