Chair of Power Electronics


KielFlex is a BMWi funded project, which targets to reduce the transportation related NO2 emissions in Kiel. Therefore, the electrification of the private and public transportation is investigated, realized and evaluated. [read more]

The KielFlex project (KIEL as the model city of FLEXible power grid) targets to reduce NO2 emission by mean of an electrification of the public transportation in Kiel and installation of vehicle charging stations. Thereby, the existing grid infrastructure shall be exploited and the investments for new grid infrastructure shall be minimized. The flexibility in the charging processes shall be exploited and the capability to use the electric vehicle charging station infrastructure to manipulate the power consumption of loads in the grid is investigated.


The project is funded by the Federal Ministry for Economic Affairs and Energy of Germany with a budget of 6.6 Mio €. The project involves ABB, the Eigenbetrieb Beteiligungen der Landeshauptstadt Kiel, the Fraunhofer research institute IFF Magdeburg, the Kieler Verkehrsgesellschaft (KVG), the grid operator Stadtwerke Kiel, SWKiel Netz  and the associated partner Seehafen Kiel. The chair of power electronics of CAU is the coordinator of the project.

The chair of power electronics aims to develop a smart congestion management scheme to minimize the new grid construction for the electrification of the transportation. The tasks include the following points:

1. Development of a real-time model of the grid and investigate algorithms for the congestion management of grids with high penetration of electric vehicle charging stations;

2. Development of algorithms to activate the potential of the storage systems and charging stations to effectively implement the peak load shaving in the electrical distribution grid;

3. Development of the demand-side management tailored to local specificities.

Title Kielflex
Coordinator Prof. Marco Liserre
Contact Person Dr.-Ing. Markus Andresen (
Type Federal Ministry for Economic Affairs and Energy of Germany Fund
Funding 6.600.000 Euro
Partners ABB AG, Eigenbetrieb Beteiligungen, Fraunhofer  IFF, Stadtwerk Kiel
Associated Partners Seehafen Kiel
Duration 01.09.2018 – 31.12.2020

Congestion management; electric vehicles; charging management;

load control, peak shaving


  • Our research is focused on the design of high efficient and reliable PWM-based power converter architectures (single-cell, multi-cell, multilevel), their modelling and control to exploit commercial as well as new power semiconductor devices with minimum over design.
    We develop controllers for electric drives and we are particularly skilled in the integration of renewable energy systems into the electric grid.
    Please discover our expertise looking to our recent projects.

    HEART - The Highly Efficient And Reliable smart Transformer
    Further Research Projects