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2016 Seventh International Green and Sustainable Computing Conference (IGSC) (2016)
Hangzhou, China
Nov. 7, 2016 to Nov. 9, 2016
ISBN: 978-1-5090-5118-2
pp: 1-8
Stephen Lee , University of Massachusetts, Amherst, United States of America
Srinivasan Iyengar , University of Massachusetts, Amherst, United States of America
David Irwin , University of Massachusetts, Amherst, United States of America
Prashant Shenoy , University of Massachusetts, Amherst, United States of America
ABSTRACT
Electric vehicles (EV) are growing in popularity as a credible alternative to gas-powered vehicles. These vehicles require their batteries to be “fueled up” for operation. While EV charging has traditionally been grid-based, use of solar powered chargers has emerged as an interesting opportunity. These chargers provide clean electricity to electric-powered cars that are themselves pollution free resulting in positive environmental effects. In this paper, we design a solar-powered EV charging station in a parking lot of a car-share service. In such a car-share service rental pick up and drop off times are known. We formulate a Linear Programming approach to charge EVs that maximize the utilization of solar energy while maintaining similar battery levels for all cars. We evaluate the performance of our algorithm on a real-world and synthetically derived datasets to show that it fairly distributes the available electric charge among candidate EVs across seasons with variable demand profiles. Further, we reduce the disparity in the battery charge levels by 60% compared to best effort charging policy. Moreover, we show that 80th percentile of EVs have at least 75% battery level at the end of their charging session. Finally, we demonstrate the feasibility of our charging station and show that a solar installation proportional to the size of a parking lot adequately apportions available solar energy generated to the EVs serviced.
INDEX TERMS
Batteries, Charging stations, Automobiles, Solar energy, Resource management, Schedules, Electric vehicles
CITATION

S. Lee, S. Iyengar, D. Irwin and P. Shenoy, "Shared solar-powered EV charging stations: Feasibility and benefits," 2016 Seventh International Green and Sustainable Computing Conference (IGSC), Hangzhou, China, 2016, pp. 1-8.
doi:10.1109/IGCC.2016.7892600
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