Sustainable Energy for Smart Cities. First EAI International Conference, SESC 2019, Braga, Portugal, December 4–6, 2019, Proceedings

Research Article

Unified Traction and Battery Charging Systems for Electric Vehicles: A Sustainability Perspective

  • @INPROCEEDINGS{10.1007/978-3-030-45694-8_5,
        author={Tiago Sousa and Lu\^{\i}s Machado and Delfim Pedrosa and V\^{\i}tor Monteiro and Jo\"{a}o Afonso},
        title={Unified Traction and Battery Charging Systems for Electric Vehicles: A Sustainability Perspective},
        proceedings={Sustainable Energy for Smart Cities. First EAI International Conference, SESC 2019, Braga, Portugal, December 4--6, 2019, Proceedings},
        proceedings_a={SESC},
        year={2020},
        month={6},
        keywords={Electric vehicle Unified system Smart grids Cost estimation},
        doi={10.1007/978-3-030-45694-8_5}
    }
    
  • Tiago Sousa
    Luís Machado
    Delfim Pedrosa
    Vítor Monteiro
    João Afonso
    Year: 2020
    Unified Traction and Battery Charging Systems for Electric Vehicles: A Sustainability Perspective
    SESC
    Springer
    DOI: 10.1007/978-3-030-45694-8_5
Tiago Sousa1,*, Luís Machado1, Delfim Pedrosa1, Vítor Monteiro1, João Afonso1
  • 1: Centro ALGORITMI, University of Minho
*Contact email: tsousa@dei.uminho.pt

Abstract

This paper presents an analysis of unified traction and battery charging systems for electric vehicles (EVs), both in terms of operation modes and in terms of implementation cost, when compared to dedicated solutions that perform the same operation modes. Regarding the connection of the EV battery charging system with the power grid, four operation modes are analyzed: (1) Grid–to–Vehicle (G2V); (2) Vehicle–to–Grid (V2G); (3) Vehicle–to–Home (V2H); and (4) Vehicle–for–Grid (V4G). With an EV unified system, each of these operation modes can be used in single–phase and three–phase power grids. Furthermore, a cost estimation is performed for an EV unified system and for dedicated systems that can perform the same functionalities, in order to prove the benefits of the EV unified approach. The cost estimation comprises two power levels, namely 6 kW, single–phase, related to domestic installations, and 50 kW, three–phase, related to industrial installations. The relevance of unified traction and battery charging systems for EVs is proven for single–phase and three–phase power grids.