Institute of Technology, Resource and Energy-efficient Engineering (TREE)

Energy

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The topics of energy efficiency and renewable energy deal with the modelling and optimisation of renewable energy systems. The weather-related fluctuations in renewable energy generation and the sector-specific requirements for the form, quantity and variability of the energy provided require a better understanding of the dynamics of cross-sectoral energy networks with integrated storage systems. The research field therefore deals with both energy meteorological issues and the investigation of energy cycles, which can range from a household to supra-regional grids.
TREE Forschungsfeld Energie Stockfoto

Research objectives:

  • Better understanding of the dynamics of multidimensional energy grids
  • Optimisation of data and energy management of microgrids and decentralised power-to-gas systems
  • Modelling of coupled electricity and gas grids with decentralised storage
  • Development of optimal regional sector coupling and storage models

„Everyone is talking about the energy transition and digitalisation today. One of the aims of our work is to think about the two together. In other words, to finally ensure that we pursue the energy transition digitally and take the energy transition into account in digitisation.”

Prof Dr Tanja Clees - Head of the TREE Research Field Energy/ Member of the TREE Board of Directors

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The energy meteorological laboratory

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In the energy meteorology focus area, photovoltaic systems are coupled with measuring devices for weather and solar power forecasts, allowing yield forecasts to be optimised. The generation of photovoltaic electricity is subject to weather-related fluctuations. Accurately forecasting these is a major challenge for the operation of electricity grids. In order to prevent grid bottlenecks in transmission and distribution grids, transmission and distribution grid operators can reduce the electricity feed-in from photovoltaic systems, but the system operator must be informed of this at least one day in advance. This is only possible with appropriate forecasts.

Energy storage

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Another key issue in the implementation of the energy transition is the storage of electrical energy generated from renewable sources for times when wind and sunlight are not sufficiently available. The storage of electricity from renewable sources is now a serious obstacle to the further, necessary expansion of generation and the associated sensible utilisation. Decentralised hydrogen storage will be used to develop and demonstrate operational options for flexibilisation. Renewable energy producers such as wind turbines or photovoltaic systems are subject to seasonal and weather-related fluctuations. This requires a considerable expansion of energy storage capacities. One possible solution is storage in the form of hydrogen, particularly in metal hydride storage systems.

In contrast, the LEITNING project is researching a battery inverter that makes it possible to provide a modular AC grid and grid-supporting functions with the help of advanced circuit topologies based on innovative SiC MOSFET power modules, magnetic components and control strategies.

Efficient mobility

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The topic of efficient mobility deals with efficient transport alternatives, from the development of new methods for flow measurement and models for expanding the charging infrastructure to the acceptance of electric bicycles as part of sustainable individual mobility. It is not only the drive system that is decisive for the efficiency of a vehicle. The shape and design are also crucial.

Research and cooperation

Kooperation mit der H-BRS - Testimonial Marco Jung

Collaboration with research institutions has long been established as an important element of open innovation in many corporate strategies. When it comes to specific research ideas or supporting entrepreneurial challenges, the university is on hand as a scientific partner with its expertise.

If you are interested in a collaboration, please get in touch.

Selected research projects

TransHyDE-Sys-MechaMod

TransHyDE-Sys is a system analysis project and a joint project within the TransHyDE lead project. In addition to the system analysis, the lead project also includes implementation and research projects on the topic of H2 transport. The system analysis takes a cross-sectional
About the project
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FlexHyX - Flexibility options for renewable hydrogen production and use by means of decentralised stationary metal hydride storage and integration into gas grids

The storage of electricity from renewable sources is now a serious obstacle to the further, necessary expansion of generation and the associated sensible utilisation. With the help of decentralised hydrogen storage, operational options for flexibilisation are to be developed and demonstrated. flexhyx_grafik.png (DE)
To the project
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GaN high power

The photovoltaic sector has been subject to enormous price pressure for many years, as falling feed-in tariffs worldwide make low component prices necessary in order to be able to manufacture and operate a PV system economically. At the same time, the demands on the functional diversity of the devices continue to increase (e.g. universal use in PV and battery applications, grid feed-in, self-consumption and island operation, provision of grid services).
About the project
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HyLeiT

The HyLeiT joint project is researching a new generation of electrolysis power converters and electrical system technology for the energy supply of hydrogen electrolysis. The aim is to halve the system costs of electrical engineering from the grid connection point to the DC connection at the electrolyser, taking into account the associated operating costs and effects on the H2 production costs.
About the project
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reTURN - Recycling organic residues and CO2 into fuels

The reTURN project partners are working to revolutionise the transport sector through sector coupling and to demonstrate a process for producing climate-friendly, synthetic fuels at sustainable costs.
About the project
Titelbild Projekt reTURN

EnerSHelf - Energy supply for healthcare facilities in Ghana

As in many developing and newly industrialising countries, power cuts are a recurring problem in Ghana. There is even a word for this: "dumsor". Added to this is the instability of the power grid. Both lead to considerable disruption in the healthcare sector, as there is no light in the operating theatre or life-saving medical equipment can fail. Although electricity from photovoltaic systems could provide a remedy here, the PV market in Ghana is still relatively untapped.
About the project
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Contact Us

Tanja Clees Portrait

Tanja Clees

Engineering, particularly Informatics for Engineers, Modeling and Simulation, TREE - Member of Executive Board, Research Professorship

tanja.clees@h-brs.de tanja.clees@scai.fraunhofer.de

Research fields

Location

Sankt Augustin

Room

B 245

Address

Grantham-Allee 20

53757 Sankt Augustin

Telephone

+49 (2241) 865-9854

Fax

+49 (2241) 865-8540

Fraunhofer SCAI

Location

Sankt Augustin

Address

Schloss Birlinghoven

53757 Sankt Augustin

Telephone

+49 (2241) 14-4074
Prof. Dr Tanja Clees
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Alexander Asteroth

Professor of Computer Science

alexander.asteroth@h-brs.de

Research fields

Location

Sankt Augustin

Room

A 022.3

Address

Grantham-Allee 20

53757, Sankt Augustin

Telephone

+49 2241 865 255
Prof. Dr Alexander Asteroth
Stefanie Meilinger Portrait Nov 23 IZNE

Stefanie Meilinger

Professor for Sustainable Technologies, esp. Energy Efficiency and Renewable Energies, Director of the International Centre for Sustainable Development (IZNE), Department Engineering and Communication (IWK)

stefanie.meilinger@h-brs.de

Research fields

Location

Sankt Augustin

Room

F 321

Address

Grantham-Allee 20

53757 Sankt Augustin

Telephone

+49 2241 865 718

Fax

+49 2241 865 8718
Prof. Dr Stefanie Meilinger
Marco Jung Portrait

Marco Jung

Professorship for Electromobility and Electrical Infrastructure with a focus on Power Electronics

marco.jung@h-brs.de marco.jung@iee.fraunhofer.de

Research fields

Location

Sankt Augustin

Room

B213

Address

Grantham-Allee 20

53757 Sankt Augustin

Telephone

+ 49 2241 865 316

Location

Sankt Augustin

Room

B213

Address

Grantham-Allee 20

53757 Sankt Augustin

Telephone

+ 49 2241 865 316
Prof. Dr Marco Jung

Links to

Further links

Energy Efficiency and Renewable Energies - Equipment
Research in the field of sustainable energy systems at the IZNE
Co-operation with the hydrogen network HyCologne
Cooperation with GKN in the field of metal hydride storage
Cooperation with hydrogenious in the field of LOHC storage
The energy meteorological laboratory