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Title: Speed planning for solar-powered electric vehicles
Authors: Lv, M
Guan, N 
Ma, Y
Ji, D
Knippel, E
Liu, X
Yi, W
Keywords: Electric vehicle
Speed planning
Issue Date: 2016
Publisher: Association for Computing Machinary
Source: Proceedings of the 7th International Conference on Future Energy Systems, e-Energy 2016, 2016, p. 2 How to cite?
Abstract: Electric vehicles (EVs) are the trend for future transportation. The major obstacle is range anxiety due to poor availability of charging stations and long charging time. Solarpowered EVs, which mostly rely on solar energy, are free of charging limitations. However, the range anxiety problem is more severe due to the availability of sun light. For example, shadings of buildings or trees may cause a solar-powered EV to stop halfway in a trip. In this paper, we show that by optimally planning the speed on different road segments and thus balancing energy harvesting and consumption, we can enable a solar-powered EV to successfully reach the destination using the shortest travel time. The speed planning problem is essentially a constrained non-linear programming problem, which is generally difficult to solve. We have identified an optimality property that allows us to compute an optimal speed assignment for a partition of the pathMergeCell then, a dynamic programming method is developed to efficiently compute the optimal speed assignment for the whole trip with significantly low computation overhead compared to the state-of- The- Art non-linear programming solver. To evaluate the usability of the proposed method, we have also developed a solar-powered EV prototype. Experiments show that the predictions by the proposed technique match well with the data collected from the physical EV. Issues on practical implementation are also discussed.
ISBN: 9781450343930
DOI: 10.1145/2934328.2934334
Appears in Collections:Conference Paper

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