On July 4, 2019, the Fraunhofer Institute for Solar Energy Systems ISE in Freiburg officially inaugurates its new Center for Power Electronics and Sustainable Grids. With a propriety connection to the 110 kV high-voltage grid and 40 MVA transformer, the new center offers a worldwide unique research infrastructure which enables it to meet the growing demands on power electronics, a key technology for the energy system transformation.
“In the future energy system, electricity will be provided not by a small number of conventional power plants but by many wind and solar power plants with fluctuating electricity generation. Thus, power electronics will assume a dominant role at all grid levels. Moreover, we require new components and functions, which enable inverters to provide stability and control for the power grid of the future,” explains Prof. Hans-Martin Henning, director of Fraunhofer ISE.
Dr. Olivier Stalter (2nd from right) and the institute directors Prof. Hans-Martin Henning (l.) and Dr. Andreas Bett (r.) explain the equipment of the new lab to State Secretary Andreas Feicht.
The development of new power electronic components and systems with more advanced properties is one of the main challenges. To achieve this, silicon carbide and gallium nitride power semiconductors will be increasingly implemented.
These devices operate with high frequencies therefore making power converters with higher power densities possible. Also, new grid services shall be investigated, especially with respect to the stability of future, inverter-based grids – focusing, not least, on procedures for testing the grid assistance capabilities of inverters, e.g. voltage and frequency stability.
Other properties, such as active resonance damping in power plants and power grids or the grid-forming characteristics of inverters will be addressed in the near future.
Expansive Lab Facilities
The new center, located in the industrial area in northern Freiburg, adds an additional 3000 m² of lab and office space to Fraunhofer ISE. Three laboratories cover the various thematic areas of power electronics: In the Power Converters Lab, systems are developed for the low voltage range, e.g. for photovoltaic systems, batteries, electric mobility and aviation.
In the Medium Voltage Lab, power electronics are developed and tested for the medium voltage range. The lab is equipped to operate medium voltage systems up to 20 MVA power. In the Multi-Megawatt Lab, multiple tests can be carried out in parallel.
The different test blocks in this lab allow operation ranging up to 10 MVA and 1000 V, that is, wind generators, large battery storage systems or CHP’s. The total actual power of 40 MV is equivalent to the power supply of a small city with circa 50,000 inhabitants. The Center has its own proprietary research grid, which is completely disconnected from the supply grid of the surrounding vicinity.
Additionally the Center’s R&D infrastructure will be enhanced by the Digital Grid Lab which deals with simulations of load profiles and energy management systems. In this lab, Fraunhofer ISE will be able to further its expertise in grid simulation and real-time communication and investigate the performance of devices and systems at important grid nodes.
Still in construction, the Digital Grid Lab is a further development of the existing Smart Energy Lab of Fraunhofer ISE. It is located in Fraunhofer ISE’s main building.
Development, Testing and Certification
With the independent TestLab Power Electronics (certified according to DIN 17025.2005), Fraunhofer ISE now widens it service range for industry customers to include development, testing, refurbishment and certification services for components up to the multi-megawatt and the medium voltage range. With a specially designed over and under voltage ride through system enabling dynamic voltage variations, specific grid situations like overvoltage and undervoltage can be simulated or particular grid impedances can be emulated.
With four different test blocks and independent transformers, several aggregates can be tested either separately in parallel or together in interconnected micro grids.
“In these facilities, we can optimally address future research topics, for example, inverter-based grids, hybrid power supplies and large storage systems,“ says an enthusiastic Dr. Olivier Stalter, division director of Power Electronics, Grids and Smart Systems at Fraunhofer ISE.
The project was supported by the German Federal Ministries for Economic Affairs and Energy (BMWi), for Education and Research (BMBF) and for the Environment, Nature Conservation and Nuclear Safety (BMU), which provided a total of 10 million euros to Fraunhofer ISE. Fraunhofer ISE itself invested a further 5 million euros in the new laboratory.
Karin Schneider | Fraunhofer-Institut für Solare Energiesysteme ISE
Skoltech scientists get a sneak peek of a key process in battery 'life'
28.05.2020 | Skolkovo Institute of Science and Technology (Skoltech)
Electric pulses precisely shape 3D-printed metal parts
28.05.2020 | Universität des Saarlandes
In living cells, enzymes drive biochemical metabolic processes enabling reactions to take place efficiently. It is this very ability which allows them to be used as catalysts in biotechnology, for example to create chemical products such as pharmaceutics. Researchers now identified an enzyme that, when illuminated with blue light, becomes catalytically active and initiates a reaction that was previously unknown in enzymatics. The study was published in "Nature Communications".
Enzymes: they are the central drivers for biochemical metabolic processes in every living cell, enabling reactions to take place efficiently. It is this very...
Early detection of tumors is extremely important in treating cancer. A new technique developed by researchers at the University of California, Davis offers a significant advance in using magnetic resonance imaging to pick out even very small tumors from normal tissue. The work is published May 25 in the journal Nature Nanotechnology.
researchers at the University of California, Davis offers a significant advance in using magnetic resonance imaging to pick out even very small tumors from...
Microelectronics as a key technology enables numerous innovations in the field of intelligent medical technology. The Fraunhofer Institute for Biomedical Engineering IBMT coordinates the BMBF cooperative project "I-call" realizing the first electronic system for ultrasound-based, safe and interference-resistant data transmission between implants in the human body.
When microelectronic systems are used for medical applications, they have to meet high requirements in terms of biocompatibility, reliability, energy...
Thomas Heine, Professor of Theoretical Chemistry at TU Dresden, together with his team, first predicted a topological 2D polymer in 2019. Only one year later, an international team led by Italian researchers was able to synthesize these materials and experimentally prove their topological properties. For the renowned journal Nature Materials, this was the occasion to invite Thomas Heine to a News and Views article, which was published this week. Under the title "Making 2D Topological Polymers a reality" Prof. Heine describes how his theory became a reality.
Ultrathin materials are extremely interesting as building blocks for next generation nano electronic devices, as it is much easier to make circuits and other...
Scientists took a leukocyte as the blueprint and developed a microrobot that has the size, shape and moving capabilities of a white blood cell. Simulating a blood vessel in a laboratory setting, they succeeded in magnetically navigating the ball-shaped microroller through this dynamic and dense environment. The drug-delivery vehicle withstood the simulated blood flow, pushing the developments in targeted drug delivery a step further: inside the body, there is no better access route to all tissues and organs than the circulatory system. A robot that could actually travel through this finely woven web would revolutionize the minimally-invasive treatment of illnesses.
A team of scientists from the Max Planck Institute for Intelligent Systems (MPI-IS) in Stuttgart invented a tiny microrobot that resembles a white blood cell...
19.05.2020 | Event News
07.04.2020 | Event News
06.04.2020 | Event News
28.05.2020 | Transportation and Logistics
28.05.2020 | Physics and Astronomy
28.05.2020 | Power and Electrical Engineering