Chair of Power Electronics

Overview

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.

Research Projects

Entwicklung eines Add-Ons für Umrichter zur aktiven Filterung der Netzspannung und Resonanz-Dämpfung basierend auf der gemessenen Netzimpedanz

The Add-on project targets the integration and coordination of several ancillary services in PV converters. The main idea is to develop an interface for the converter which produces an additional reference signal for the current controller able to realize Low-Voltage-Ride-Through, Resonance Damping and Active Filtering in the LV grid. The measurements of the grid impedance are exploited for the calculation of the currents. As a result, the power quality and the stability margins of the grid are highly improved and the cost for additional converters is saved. [read more]

RELINK - Power Electronic Converter for connection of Decentralized AC- and DC-Systems

The project RELINK goal is the development, design, and implementation of an intelligent power electronics based system, which shall improve the operation and flexibility of the regional and national grid. [read more]

DFG - Formal stability assessment of hybrid distribution grids based on the correct modeling of the effect of synchronization of the power electronics interfaces

The project is to propose a stability assessment aimed at modeling and quantifying the driving phenomena of microgrid control instability. To achieve this goal, we propose to study six main elements. For each one we expect to have a dedicated task of the project. [read more]

KielFlex

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]

Stability Analysis and Control of a Distribution Grid with High Penetration of Wind Energy

In the last years, the legacy power grids, which are dynamically dominated by centralized power plants, are progressively evolving into power electronic based power systems, driven by the large-scale adoption of electronic power converters. This evolution paves the way towards a huge improvement on sustainability and flexibility, but the hosting capacity of the grid for renewable energy is limited by the grid infrastructure. Moreover, the continuous increase of renewable energy sources in the grid poses new challenges, such as the stability of the grid without the centralized power plants. More precisely, for distribution grids dominated by renewable energy sources, the problem of Harmonic Instability can arise and needs to be considered. [read more]

EV fast charging station design and protection

The isolated dc/dc converter is one of the biggest challenges in the design of electric vehicle fast charging stations. This EKSH funded project in collaboration with two local companies supports the development of the next generation of fast charging stations for electric vehicles with Silicon Carbide (SiC) based power semiconductors, which enable to achieve higher efficiency and higher power density. Within the scope of the project, condition monitoring techniques for capacitors and short circuit detection and interruption methods for power semiconductors will be investigated as enabling technologies for reliable and safe fast charging stations. [read more]

PE Region Platform - cross boarder platform for energy efficiency power electronics

The PE-Region Platform project target is to support sustainable development through new green products and solutions within energy efficient power electronics. In this manner, it contributes to maintaining and strengthening the position of strength of the Danish-German cross-border region in this field. The project objective is power electronics research and development as well as establishment of a lasting innovation platform.[read more]

Innovative battery research SH: Start of a new project “BAEW – Labor für zuverlässige batteriegestützte Energiewandlung”

Innovative battery technology paired with the right power electronics has the potential to fundamentally improve our energy generation and mobility. As batteries are more and more in focus, new materials solution for high energy and high power batteries are necessary. Silicon as one of the earth abundant materials is the material of choice having the potential to drastically increase the capacity and thus energy density of batteries.

Therefore, this project aims to bring together specialists in the field of battery development from materials science and in the field of energy conversion from power electronics in a new real laboratory at the Kiel University (CAU) with a new research infrastructure. Schleswig-Holstein invests almost two million euros in the equipment to develop and test new battery systems for intelligent networks and electromobility. The interdisciplinary laboratory at the Faculty of Engineering is also open for scientific and industrial cooperation. Additionally, this laboratory should be integrated in the daily education of young researchers in Schleswig-Holstein.
In this innovation laboratory, in close mutual cooperation, new battery technology can be tested in application-related power electronics issues related to memory integration in smart grids and electromobility. In addition, the use of "Wide Band Gap" (WBP) power semiconductors (silicon carbide in the stationary area and gallium nitride in mobile applications) forms the heart of the project. In particular, the new infrastructure will offer regional prospects for high-quality research, cooperation and training in the future. Locally rooted and well-trained specialists in turn benefit the economy in Schleswig-Holstein and promote the transfer of knowledge between universities and industry.
On Thursday, July 2, 2020, 9:45 a.m., Prime Minister Daniel Günther hands over the funding decision of 1,974,034 euros partially funded by the “Wirtschaftsförderung und Technologietransfer Schleswig-Holstein GmbH (WTSH)” as well as the “European Regional Development Fund (EFRE)”.

Research

  • 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

Location