Kiel research team presents prototypes at the Hannover Messe
Fast charging of electric cars requires a lot of energy in a short period of time. These peak loads lead to bottlenecks in the power grid, and are one of the problems facing the expansion of electric mobility. The many challenges of the energy transition require a flexible and reliable power grid, which can accommodate fluctuations in the consumption and production of energy.
Peak loads caused by fast charging of electric cars leads to bottlenecks in the power grid. The energy transition requires a flexible power grid.
A key element of this could be the smart transformer, which is being researched by the Power Electronics working group at Kiel University. On the basis of power semiconductors made of silicon carbide, they have developed a prototype which automatically regulates the current flow.
It could be used not only for a better integration of charging stations into the power grid, but also for the connection of direct current networks and in data centres. The researchers will present a part of the prototype for the first time at the Hannover Messe.
As part of the expansion of renewable energy, the number of decentralised energy producers and consumers is increasing, e.g. wind turbines and charging stations. "Our conventional infrastructure is designed for reverse power flow," said Professor Marco Liserre from Kiel University.
New components from power electronics could help to distribute the electricity according to demand, and thus better manage the power grid and counteract overloading and outages. Together with his working group, Liserre has developed a power electronics transformer, which can transform medium voltage into low voltage and enables a connection to DC at the same time. "We want to modernise the power grid and prepare it for the energy transition. What we need is a flexible, efficient and above all reliable system," continued Liserre.
Thanks to its modular design, the smart transformer developed in Kiel is maintenance-friendly, and can be easily and cost-effectively scaled for different applications. It could reduce energy consumption and increase security in data centres and in more electric aircraft.
In both environments, the infrastructure is designed with intentional built-in redundancy: multiple systems ensure that operations continue to run reliably and the power supply is not interrupted, even if individual components fail. Because the transformer applied redundancy on the building block level, less redundancy on the electronic level is necessary, which increases reliability and reduces costs.
The basic building block of the current prototype of the intelligent transformer from Kiel connects a low voltage dc with value of 800V and a medium voltage ac with output voltage level of 2.6 kV line-to-line. Moreover, the system can process up to 100 kW of output power. The transformer was developed as part of the European research project HEART (Highly Efficient And Reliable smart Transformer), which has been running at Kiel University since 2014.
From 23-27 April 2018, the research team will be presenting part of its prototype at the Kiel University booth at the Hannover Messe (Hall 2, Research & Technology, Booth C07). Professor Marco Liserre will present the concept of the smart transformer in a lecture on site on Tuesday 24 April at 12 noon and 3pm. The state university is represented at the world's largest industrial trade show for the second time, and presents diverse contributions from the research and innovative location of Schleswig-Holstein: www.uni-kiel.de/hannovermesse
Photos are available to download:
Caption: Peak loads caused by fast charging of electric cars leads to bottlenecks in the power grid. The energy transition requires a flexible power grid.
Capture: A research team around Marco Liserre, Professor of power electronics, has developed the prototype of a smart transformer that regulates the power flow.
Foto/Copyright: Siekmann, CAU
Capture: New components from power electronics could help to distribute the electricity according to demand, and thus better manage the power grid.
Foto/Copyright: Siekmann, CAU
Prof. Dr Marco Liserre
Institute of Electrical Engineering and Information Technology
Tel.: +49 (0)431/880-6100
Christian-Albrechts-Universität zu Kiel
Press, Communication and Marketing, Dr Boris Pawlowski, Text/editing: Julia Siekmann
Postal address: D-24098 Kiel, Germany,
Telephone: +49 (0)431 880-2104, Fax: +49 (0)431 880-1355
E-mail: email@example.com, Internet: http://www.uni-kiel.de Twitter: http://www.twitter.com/kieluni Facebook: http://www.facebook.com/kieluni Instagram: http://www.instagram.com/kieluni
Julia Siekmann | idw - Informationsdienst Wissenschaft
Further reports about: > CAU > Christian-Albrechts-Universität zu Kiel > Power Electronics > building block > electric cars > energy consumption > energy producers > key element > modular design > power grid > power supply > reliable power > renewable energy > silicon carbide > trade show > wind turbines
A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes
20.07.2018 | Science China Press
Future electronic components to be printed like newspapers
20.07.2018 | Purdue University
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences