Design of a Test Environment for Holistic Investigation of Coupled AC-DC-Grids

  • Contact:

    Prof. Dr.-Ing. Marc Hiller

  • Project Group:

    Powerel Ectronic Systems

  • Funding:

    Federal Ministry of Education and Research (BMBF)

    (Funding code 03SF0633)

    ~ 2,9 mio € 

  • Partner:

    Institut für Elektroenergiesysteme und Hochspannungstechnik (IEH)

  • Startdate:

    July 2021

  • Enddate:

    June 2024

Objectives and Results

The objective of the project applied for is the project planning, construction and commissioning of an "AC/DC network laboratory" at the Elektrochtechnisches Institut (ETI) and the Institute for Elektroenergiesysteme und Hochspannungstechnik (IEH) of KIT that is as close to reality as possible. The laboratory is to be set up as a network of both institutes and, in addition to independent experimental setups in each of the institutes, will in particular enable interconnected operation via a connecting cable between the two institutes. For this purpose, the Power Hardware-in-the-Loop (PHIL) test environment of IEH is to be further developed and coupled with the newly planned DC and AC island network at ETI. The goal is to enable a simulation of both AC and DC grids as well as the simultaneous operation of power electronic equipment in this real grid replica.


Contents and Approach

At IEH, the PHIL test environment is to be expanded in order to be able to investigate power electronic systems as grid coupling and their interactions with regard to stability, dynamics and mutual influence of the connected grids.
At ETI, a DC island grid is to be set up to enable experiments with various existing, and newly developed, scaled topologies under different grid conditions (weak grid, fault ride-through, etc.).
Furthermore, an unscaled, galvanically isolated DC/DC converter as a Power Electronic Building Block (PEBB) of a solid state transformer is to be built and measured.