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Electrical Engineering and Information Technology

Kategorie: ‘Energie und Umwelt’

New research center CARL ushers in a new era

January 27th, 2023 | by
CARL research building as a 6-story new building with a sloping roof, standing in solid construction in research cluster F along Campus Boulevard.

CARL research building as a 6-story new building with a sloping roof, standing in solid construction in research cluster F along Campus Boulevard.

We congratulate the Institute for Power Electronics and Electrical Drives on moving into the new research building CARL – Center for Ageing, Reliability and Lifetime Prediction of Electrochemical and Power Electronic Systems – on the Melaten campus.
Three large laboratory halls as the heart of CARL and an interdisciplinary research network of ten core professorships, about 20 other chairs and institutes of RWTH Aachen and Forschungszentrum Jülich will now make it possible to push groundbreaking research work on battery aging and lifetime prediction of power electronics from a holistic perspective. “We want to understand down to the atomic and crystal level how energy storage devices function and respond to different requirements,” says Professor Dirk Uwe Sauer of ISEA, explaining the fundamental idea behind CARL.

Test benches for load and environmental simulations are set up in the first laboratory area. For example, this involves electrical, mechanical, chemical or climatic influences on the materials and systems of batteries and power electronics. Here, aging processes are run and analyzed in fast motion, as it were, in order to be able to investigate their causes in detail.

The second laboratory area deals with the construction of prototypes. The performance of entire systems or even individual components is to be examined here in order, for example, to be able to rule out material or design faults at an early stage.

Finally, the third laboratory area is dedicated to physical-electrochemical analysis. With the aid of an analysis chain for structural and material investigations, which will include a state-of-the-art computer tomograph with unprecedented resolution, the structures of the material can be examined and analyzed down to atomic resolution.

Consideration will be given to both the end user and the developer of machines and materials for the production of batteries and power electronics. “With our research results, we can help accelerate development cycles and ultimately save money by optimally configuring systems,” says Professor Sauer. This is because the question of service life is essential for economic considerations. For example, it is important for car manufacturers to be able to estimate depreciation periods, warranty services and reliability as part of functional safety.

Friedrich Wilhelm Awards 2022

November 29th, 2022 | by

RWTH Rector Ulrich Rüdiger honored 17 outstanding graduates of RWTH Aachen University with the Friedrich Wilhelm Awards 2022.
Photo: Andreas Schmitter

Honoring outstanding achievements by RWTH Aachen graduates

The Friedrich Wilhelm Prize is awarded annually by the foundation of the same name in the form of prize money to students and researchers at RWTH Aachen University who have been selected for their outstanding achiements in their theses. Among this years recipients are Maxim Christian Maria Müllender, Master of Science, from the Institute of High Voltage Equipment and Grids, Digitalization and Energy Economics and Laurids Schmitz, Master of Science, from the Institute for Power Electronics and Electrical Drives. Both winners were recognized due to their excellent masters theses.

Funding for research and teaching

The name of the foundation goes back to the Prussian crown prince and later Emperor Friedrich Wilhelm III., who founded a polytechnic institute in the Rhine province in 1858 using a donation from the Aachen and Munich fire insurance companies. In doing so, he laid the foundation for both the Rheinisch-Westfälische Technische Hochschule and the Friedrich Wilhelm Foundation, which is founded 1865 by the legal predecessor of todays Aachener und Münchener Beteiligungsgesellschaft. Since then, the promotion of research and teaching and the support of students and researchers at the RWTH Aachen have been the central concerns of the foundation.

“ELMAR” project: The ISEA is part of it!

September 30th, 2022 | by

The objective of the ELMAR project is to integrate the use of electric heavy mining machinery in the domestic extractive industry and demonstrate its utility.

A secure supply of mineral raw materials is essential for the competitiveness and prosperity of Germany and Europe. At the same time, raw material extraction results in substantial carbon dioxide emissions and therefore needs to become more sustainable in order to help achieve climate targets and to remain competitive. This includes, in particular, the decarbonization of operations that extract raw material. In Germany, this affects around 1,600 companies with around 2,700 plants and 23,500 employees in gravel, sand, and natural stone production alone.

Up to now, a significant proportion of the energy used in the extraction of raw materials at these plants has been used for internal transport. And most of this energy is being consumed by mobile diesel-powered (heavy-duty) vehicles. Conversion to (battery) electric operation is therefore a key lever for reducing emissions in this sector. This applies to the retrofitting of existing companies as well as to future projects.

 

Decarbonization of Domestic Raw Material Extraction – A Holistic Approach

In the newly launched ELMAR project, a consortium of research and industry partners is investigating how the decarbonization of the raw materials sector can be achieved and implemented in a holistic approach. The project involves the deployment of autonomous electric heavy-duty electric mine transport systems, the adaptation of the infrastructure this requires, and the redesign of operational processes. In addition, the project seeks to optimize the matching of energy demand and energy supply with the help of a connected, model-based and intelligent operational management.

ELMAR lays an important foundation for the integration of electric automated mobile heavy-duty transport machines in raw material extraction,” says Dr. Tobias Hartmann of the Institute for Advanced Mining Technologies at RWTH Aachen University. “Maintaining process reliability in extraction while ensuring security of electrical supply, as well as coupling it to renewable energy sources, we want to demonstrate in representative application scenarios that electrical transport is possible in domestic resource extraction. The holistic approach taking production, energy demand and energy supply aspects int account makes it possible to optimize existing and upcoming operating concepts.”

The consortium consists of two RWTH institutes, the Institute for Advanced Mining Technologies (AMT) and the Institute for Power Electronics and Electrical Drives (ISEA), and industry partners. Volvo Group Trucks Central Europe GmbH, Volvo Construction Equipment Germany GmbH, and Volvo Autonomous Solutions AB (commissioned by VCE Germany GmbH), are participating as construction equipment and transport vehicle manufacturers and automation providers. Other partners include mine operators Mineral Baustoffe GmbH (part of the STRABAG Group), Knauf Gips KG, and Nivelsteiner Sandwerke & Sandsteinbrüche GmbH; AI and cloud-based software providers PSI Fuzzy Logik & Neuro Systeme GmbH and PSI Software AG; and TITUS Research GmbH as a developer of autonomous monitoring systems.

The ELMAR project is scheduled to run until the end of July 2025 and receives around 6 million euros from the German Federal Ministry of Economics and Climate Protection (BMKW) as part of the “Research and Development in the Field of Electromobility” funding initiative.The total project volume is around 11 million euros.

 

Contact:

Dr.-Ing. Tobias Hartmann
Institute for Advanced Mining Technologies (AMT)
Telefon: +49 241 80 90755
E-Mail: thartmann@amt.rwth-aachen.de
www.amt.rwth-aachen.de/

 

Source: University News

German Study Award of the Körber Foundation 2022: 2nd Prize Goes to Weihan Li from ISEA

August 3rd, 2022 | by
Portrait von Dr. Weihan Li

© David Ausserhofer: Dr. Weihan Li

Dr. Weihan Li has been awarded the second German Study Prize of the Körber Foundation for his dissertation.

Every year, the foundation awards the German Study Award to the best doctoral students from all disciplines. The main focus here is on the social significance of the research. We congratulate Dr. Weihan Li from the Institute for Power Electronics and Electrical Drives for his outstanding achievement.

Abstract:
Machine learning for efficient battery use in mobility and energy supply for sustainable climate protection
In the fight against climate change, batteries play a crucial role as a flexible energy storage system for renewable energies. However, battery ageing during use is proving to be the limiting factor for an efficient and reliable future energy system. In this work, machine learning enables online ageing diagnosis, prediction of future ageing progression and optimisation of operation strategy, which not only increases battery performance and lifetime, but also reduces unexpected failures and contributes to more transparency about battery health. The methodology developed improves battery use in mobile and stationary applications, enabling safer and longer-lasting operation, which saves costs in the long term, conserves resources and is socially feasible. This work thus provides an essential building block for the broad acceptance and implementation of climate-friendly mobility and energy supply on the way to a climate-neutral energy system.

We would also like to congratulate Dr. Lars Nolting from the Chair of Energy System Economics at RWTH Aachen University on winning the first prize, as well as all the other prize winners:
Dr. Manuel Häußler from the University of Konstanz, Dr. Kim Teppe from the University of Hamburg, Dr. Julia Böcker from the University of Lüneburg, Dr. Mareike Trauernicht from the Free University of Berlin and Dr. Felix Lansing from the Technical University of Dresden.

For more information on the German Study Award 2022, please see the press release of the Körber Foundation.

Professor Antonello Monti Receives NRW Innovation Award

July 15th, 2022 | by
Portrait von Professor Monti

© Peter Winandy

Professor Antonello Monti is not only the holder of the Chair of Automation of Complex Power Systems, but since the end of May 2022 he has also been the winner of the Innovation Award of the Federal State of North Rhine-Westphalia. Awards were made in the categories “Honorary Award”, “Young Researchers” and “Innovation”, with Professor Monti being honoured in the “Innovation” category. This innovation prize is endowed with 100,000 € and is thus only second to the Future Prize of the Federal President in Germany.

With the award, the federal state recognises excellent research with particular social significance, scientific potential and relevance in application. In the case of Professor Antonello Monti, it is pioneering work in the digitalisation of power systems , which has great relevance for the energy transition.

In detail, it is a new concept for the automation of modern energy networks, which is based on modern IT solutions and enables a modular approach. The development as open source supports the cooperation of all participants and the creation of an open ecosystem.

The award was presented by the Minister President of NRW, Hendrik Wüst, and Professor Andreas Pinkwart, the NRW Minister for Economic Affairs, Innovation, Digitalisation and Energy.

For more details, see the official RWTH press article.

New Publication by Professor Lemme and Colleagues

June 8th, 2022 | by
Portrait von Prof. Lemme

Portrait of Prof. Lemme (© JRF)

Healing Achilles heel of two-dimensional transistors

Stability – in the sense of stable operation thorough lifetime – is one of the key characteristics that an electronic device need to present to be suitable for applications. And it is the Achilles heel of transistors based on two-dimensional materials, which typically show much worse stability than devices based on silicon. A team of researchers from TU Wien, AMO GmbH, RWTH Aachen University and Wuppertal University has now demonstrated a novel engineering approach to enhance the electrical stability of two-dimensional transistors by carefully tuning the Fermi energy. The results have been reported in Nature Electronics.

Today, there is little doubt that devices based on graphene and other two-dimensional (2D) materials can exceed the state of the art for certain applications, thanks to their intrinsic properties. Two-dimensional materials are also seen as some of the most promising candidates for realizing ultimately scaled transistors at the end of the roadmap of silicon technology.  However, devices based on 2D materials often show poor electrical stability, meaning that their behavior changes depending on their operation history.

“Component reliability is one aspect that is often neglected in research. This is precisely where we have been working for several years, because it is of central importance for applications.” explains Professor Max Lemme, scientific director of AMO GmbH and Head of the Chair of Electronic Devices at RWTH. The instability is not only caused by 2D materials themselves, but mostly by charges trapped into the oxide-insulator used to fabricate the transistors. “Ideally, one would like to use a different insulator with fewer charge traps,” says Lemme, “but there are no scalable solutions for this yet. In our work, we have shown instead that it is possible to use a standard insulator such as aluminum oxide and to significantly suppress the adverse effects of the charge traps in the oxide, by adjusting the charge carrier density in the 2D material.”

Mikrochip

© Martin Braun

The work combines a thorough theoretical analysis of the novel approach – dubbed by the authors ‘stability-based design’ – and a proof of principle demonstration of the concept, performed by measuring different types of graphene-based FETs. The key idea of the approach is to try to engineer the combination 2D-material/insulator in such a way that the energy of the charge traps in the insulator is as different as possible from the one of the charge carriers in the 2D material. Lemme explains: “Graphene based FETs were the ideal test bed for our approach, as it is relatively easy to tune the energy of charge carriers in graphene. The approach, however, is applicable to all FETs based on 2D semiconductors”.  These results represent a major step forward towards stable and reliable 2D materials transistors to be integrated in semiconductor technology.

Bibliographic information:
T. Knobloch, B. Uzlu, Y. Yu. I.llarionov, Z. Wang, M. Otto, L. Filipovic, M. Waltl, D. Neumaier, M. C. Lemme, T. Grasser, Improving stability in two-dimensional transistors with amorphous gate oxides by Fermi-level tuning, Nature Electronics (2022) – Open Access
DOI: 10.1038/s41928-022-00768-0

 

Contact:
Prof. Max C. Lemme
AMO GmbH
lemme@amo.de

(Deutsch) RWTH bündelt Stärken zum Thema Kreislaufwirtschaft

September 8th, 2021 | by

Sorry, this entry is only available in German.

More diversity in science – Prof. Monti as a scout in the Henriette Heart Scouting Program

July 29th, 2021 | by

The Henriette Herz Scouting Program, funded by the BMBF, aims to expand and diversify the Alexander von Humboldt Foundation’s network. The program specifically recruits established and experienced researchers who already have an international network. It enables the scouts to select up to three scientists who will then directly receive a fellowship. The first will go to a female researcher.
The scouts aim to approach international researchers from abroad who have not yet been considered for an academic fellowship to the Humboldt Foundation and a research stay in Germany. As a result, the program will attract new collaborative partners for Germany, both from a specialist and geographical perspective. At the same time, the aim is to increase the quota of women sponsored in the Humboldt Research Fellowship Programme.

We are very pleased that Prof. Antonello Monti has been selected for the Henriette Herz Scouting Program.

“The program offers us the possibility to increase our international cooperation by creating new links with universities that are not currently working with us.
What is extremely interesting about this program is the possibility to be really fast in offering the scholarship. By skipping the standard review process, the time between identification of candidates to the start of the scholarship becomes extremely short.” – Prof. Monti

 The Henriette Herz Scouting Program, funded by the BMBF, aims to expand and diversify the Alexander von Humboldt Foundation’s network. The program specifically recruits established and experienced researchers who already have an international network. It enables the scouts to select up to three scientists who will then directly receive a fellowship. The first will go to a female researcher.
The scouts aim to approach international researchers from abroad who have not yet been considered for an academic fellowship to the Humboldt Foundation and a research stay in Germany. As a result, the program will attract new collaborative partners for Germany, both from a specialist and geographical perspective. At the same time, the aim is to increase the quota of women sponsored in the Humboldt Research Fellowship Programme.

We are very pleased that Prof. Antonello Monti has been selected for the Henriette Herz Scouting Program.

“The program offers us the possibility to increase our international cooperation by creating new links with universities that are not currently working with us.
What is extremely interesting about this program is the possibility to be really fast in offering the scholarship. By skipping the standard review process, the time between identification of candidates to the start of the scholarship becomes extremely short.” – Prof. Monti

The Henriette Herz Scouting Program, funded by the BMBF, aims to expand and diversify the Alexander von Humboldt Foundation’s network. The program specifically recruits established and experienced researchers who already have an international network. It enables the scouts to select up to three scientists who will then directly receive a fellowship. The first will go to a female researcher.
The scouts aim to approach international researchers from abroad who have not yet been considered for an academic fellowship to the Humboldt Foundation and a research stay in Germany. As a result, the program will attract new collaborative partners for Germany, both from a specialist and geographical perspective. At the same time, the aim is to increase the quota of women sponsored in the Humboldt Research Fellowship Programme.

We are very pleased that Prof. Antonello Monti has been selected for the Henriette Herz Scouting Program.

“The program offers us the possibility to increase our international cooperation by creating new links with universities that are not currently working with us.
What is extremely interesting about this program is the possibility to be really fast in offering the scholarship. By skipping the standard review process, the time between identification of candidates to the start of the scholarship becomes extremely short.” – Prof. Monti

The Henriette Herz Scouting Program, funded by the BMBF, aims to expand and diversify the Alexander von Humboldt Foundation’s network. The program specifically recruits established and experienced researchers who already have an international network. It enables the scouts to select up to three scientists who will then directly receive a fellowship. The first will go to a female researcher.
The scouts aim to approach international researchers from abroad who have not yet been considered for an academic fellowship to the Humboldt Foundation and a research stay in Germany. As a result, the program will attract new collaborative partners for Germany, both from a specialist and geographical perspective. At the same time, the aim is to increase the quota of women sponsored in the Humboldt Research Fellowship Programme.

We are very pleased that Prof. Antonello Monti has been selected for the Henriette Herz Scouting Program.

(Deutsch) E.ON und RWTH verlängern Kooperationsvertrag Erfolgreiche Arbeit des E.ON Energy Research Centers wird weiter gefördert

July 21st, 2021 | by

Sorry, this entry is only available in German.

CARL – Interdisciplinary Research Institution in Aachen

July 6th, 2021 | by

Copyright: KSG

A center for fundamental research into the ageing of battery materials and power electronic systems is currently being established at RWTH Aachen University. The “Center for Ageing, Reliability and Lifetime Prediction of Electrochemical and Power Electronic Systems“, CARL for short, is an interdisciplinary research facility where staff from ten core professorships and around 20 other chairs and institutes at RWTH Aachen and Forschungszentrum Jülich can conduct groundbreaking research. These include scientists from the disciplines of chemistry, physics, mathematics, computer science, materials science, mechanical and electrical engineering. The question of service life is essential when considering economic viability. For instance, this is important for car manufacturers, depreciation periods, warranties and to be able to assess reliability as part of functional safety.