Combining predictive and prescriptive techniques for optimizing electric vehicle fleet charging

The last decade has witnessed a burgeoning interest in transportation electrification from the academia, government, and industry. A current barrier faced by fleet operators is the charge scheduling, a problem that becomes more pronounced with the fleet size, heterogeneity (in both the vehicle fleet and the charging infrastructure), and uncertainty, which has given rise to the Charging-as-a-Service (CaaS) industry. A CaaS provider intermediates between the fleet owner and the macrogrid, and is key to ease the transition to the future of transportation with electric vehicles. This paper addresses the CaaS providers’ electric vehicle fleet (EVF) charge scheduling problem with time-varying electricity prices. The authors develop a rolling-horizon online optimization approach reinforced with a predictive model and a heuristic warm-start to solve this emerging multi-stage stochastic optimization problem. A numerical experiment demonstrates that the method outperforms an industry benchmark by 13.24%–18.44% with respect to charging costs under the tested conditions. In addition to cost savings, the energy use profile of resulting schedules consumes less energy in peak hours, which can reduce carbon emissions and improve grid stability. Thus, the proposed approach identifies charging schedules that simultaneously benefit CaaS providers, fleet owners, electric power producers, and the macrogrid in general.

• Record URL:
  • https://doi.org/10.1016/j.trc.2023.104149
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0968090X23001389
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0968090X
• Supplemental Notes:
  • © 2023 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Mahyari, Ehsan
  • Freeman, Nickolas
  • 0000-0002-3036-7335
  • Yavuz, Mesut
• Publication Date: 2023-7

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 104149
• Serial:
  • Transportation Research Part C: Emerging Technologies
  • Volume: 152
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0968-090X
  • Serial URL: http://www.sciencedirect.com/science/journal/0968090X

Subject/Index Terms

• TRT Terms: Electric vehicle charging; Electric vehicles; Energy consumption; Optimization; Savings; Scheduling; Vehicle fleets
• Subject Areas: Energy; Highways; Planning and Forecasting; Vehicles and Equipment;

Filing Info

• Accession Number: 01889887
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 11 2023 12:05PM