DC Fast-Charging Stations for EVs Controlled by a Local Battery Storage in Low Voltage Grids

Marjan Gjelaj, Chresten Træholt, Seyedmostafa Hashemi Toghroljerdi, Peter Bach Andersen

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    Abstract

    Electric Vehicles (EVs) are representing a great opportunity for major car manufacturers to invest resources in new technologies in order to support sustainable transportation and the reduction of 퐂퐎ퟐ emissions, in particular in the metropolitan areas. In recent years, the increasing penetration of EVs and their charging systems are going through a series of changes. This paper addresses the design of a new DC Fast Charging Station (DCFCS) for EVs coupled with a local Battery Energy Storage (BES) by using the IEC 15118, which provides a communication interface among different actors. DCFCS is equipped with a bidirectional AC/DC converter for feeding power back to the grid, two lithium batteries and a DC/DC converter. The proposed solution decreases the charging time of EVs and facilitates the integration of fast chargers in existing low voltage (LV) grids. The charging station can also be used as a multifunctional grid-utility for ancillary services such as primary frequency control, load levelling and congestion management.
    Original languageEnglish
    Title of host publicationProceedings of 12th IEEE Power and Energy Society PowerTech Conference
    Number of pages6
    PublisherIEEE
    Publication date2017
    ISBN (Print)9781509042371
    DOIs
    Publication statusPublished - 2017
    Event12th IEEE Power and Energy Society PowerTech Conference: Towards and Beyond Sustainable Energy Systems - University Place, University of Manchester., Manchester, United Kingdom
    Duration: 18 Jun 201722 Jun 2017

    Conference

    Conference12th IEEE Power and Energy Society PowerTech Conference
    LocationUniversity Place, University of Manchester.
    Country/TerritoryUnited Kingdom
    CityManchester
    Period18/06/201722/06/2017

    Keywords

    • Coordinated control
    • DC fast charging
    • Battery energy storage
    • Electric vehicle

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