Chair of Power Electronics

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]

Zwei Studenten und eine Tasse Kaffee

The goal of the Chair of Power Electronics is to build up the system in a modular structure, which makes it highly efficient, reliable, scalable, and compact. Through the use of an innovative loss distribution algorithm among different cells, the efficiency and lifetime of the system can be controlled and optimized in real-time. This is a novelty that will make it possible, in addition to the maximization of the lifetime, to reduce maintenance and repair costs. The use of hybrid cells will make it possible to avoid DC protection circuits, and at the same time to disconnect the system from the grid in the event of DC faults. This option will further reduce costs and overall volume. An innovative "RELINK laboratory platform" will be developed to evaluate the limitations and potentials of the mentioned solutions in a realistic way. The aim is to allow experimental validation of the proposed features, without the necessity to build a whole system, which has never been achieved so far.

In order to implement the project, the Chair of Power Electronics will initially design and develop hybrid cells of the modular inverter in the medium voltage range. It will follow the design and realization of the RELINK laboratory platform to test and compare the developed hardware concepts. After intensive tests carried out at the university's medium-voltage laboratory, the Chair of Power Electronics will actively participate in field tests. These aim at the evaluation of the theoretical models as well as of the accuracy of the concept of the RELINK test laboratory platform.

Zwei Studenten und eine Tasse Kaffee
Title RELINK -  Power Electronic Converter for connection of Decentralized AC- and DC-Systems
Coordinator Prof. Marco Liserre
Contact Person Mr. M.Sc. Luis Camurca ( , 
Type Joint Research Programme (funded by Federal Ministry for the Economy and Energy)
Funding 694.929,12 Euros

Companies and Fraunhofer IFF (IFF)

Duration 01.06.2017 – 31.05.2020
Keywords Modular converters, medium voltage, system integration


  • 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.

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