E-Mobility-V2G-Testbed

Motivation

To apply the concept of electric mobility in the nearest future on a larger-scale, the DAI laboratory established a complete E-mobility-V2G-Testbed in the center of Berlin. The test site enables our researchers to analyse and test different e-mobility technologies and scenarios in a real-life network of users, e-vehicles, charging stations and the overall energy grid. Located at Ernst-Reuter-Platz the test site provides novel approaches in e-mobility-infrastructure and in-vehicle-components (soft-/hardware) to realize projects and tests in the area of e-mobility.

 

The focus of DAI-lab’s work in the testbed lies upon various goals. In addition to the overall goals of realizing optimized personal mobility for each e-vehicle user and, methods of non-discriminatory access to charging stations, one objective is to ensure electricity grid stability and support the integration of renewable energy sources in various e‑mobility-scenarios. In this field of research, the testbed allows to undergo the process of technical realization, potential analysis and cost efficiency planning.

Research Key Topics

To analyse the functionality and practicability of different e-mobility-concepts it is necessary to evaluate and possibly optimize state-of-the-art concepts by applying simulations and real-life use-cases. In this context, the DAI-lab realized a decentralized, agent-based management and control architecture for their test site “E-Mobility-V2G-Testbed”. The following features characterize the test site architecture:

  • scalability (concurrency)
  • dynamic expandability
  • reusability
  • multimodality and interoperability
  • data security and reliability of services
  • grid stability functions

Within the architecture a whole tool set has been developed within different projects (e.g. MINI-E, Gesteuertes Laden V2.0). The tools on the test site are consistently refined (e.g. in eCo-FEV) and are at present composed of:

  • intelligent charge-management (based on JIAC V)
  • planning system for an intermodal mobility planning
  • user applications for all current operating systems
  • billing and monitoring systems

Another feature of the test site “E-Mobility-V2G-Testbed” is its connection to the “Ambient Assisted Living Testbed”, another test site of DAI-lab, dedicated to research in smart environments and smart homes. The linkage of these two test sites enables diverse examinations with a focus on the interconnection of smart home applications, prosumer behavior and e-vehicles.

Infrastructure

 

  • 3 e-vehicles
    • V2G-enabled
    • open software platform
    • connection to CAN-bus and charging control
  • 3 charging stations
    • powerline- and V2G-enabled
    • open software platform
  • billing and monitoring systems
    • AAA (authentication, authorization, and accounting)
    • monitoring of power supply, charging stations and IT-components
    • notification and remote control in case of error
  • open software platform in backend