Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Innovations in thermal and electric storage systems: Fraunhofer ISE at the Energy Storage Europe

05.03.2019

In Düsseldorf, eight member institutes of the Fraunhofer Energy Alliance are presenting their range of services from March 12-14, 2019 at the Energy Storage Europe, the leading international trade fair on energy storage. The Fraunhofer Institute for Solar Energy Systems ISE is exhibiting its innovations in the areas of electrochemical and thermal energy storage, power electronics and Power-to-Hydrogen at the joint booth (H33, located in Hall 8b).

In parallel, the 8th Energy Storage Europe Conference (ESE) and the 13th International Renewable Energy Storage Conference (IRES) is taking place, where Fraunhofer ISE researchers will present results in the fields of electrical and thermal energy storage.


The SiC inverter, developed at Fraunhofer ISE, is both highly efficient and particularly compact.

© Fraunhofer ISE


The battery stack can be used for different stationary applications.

© Fraunhofer ISE/Photo: Dirk Mahler

Silicon-Carbide Synchronous Converter 25 kW

In the collaborative research project “OptiStore”, Fraunhofer ISE develops a highly efficient bidirectional converter with a maximum power of 25 kW.

The objective is to develop and test an innovative power self-consumption system based on a modular converter lithium-ion battery unit for optimum use of renewable energy sources in the commercial and industrial sectors.

The investment and operation costs of the entire system shall be cost-optimized yet at the same time have an efficiency greater than the typical systems found on the market today.

These contrary goals can only be reached with the newest silicon-carbide MOSFETs and an innovative design.

Thanks to a frequency of 96 Hz, the passive components can be designed smaller than usual, yet at the same time a very good efficiency of up to 99 % can be achieved.

https://www.ise.fraunhofer.de/en/research-projects/optistore.html

Three-Phase SiC-UPS Inverter

The highly compact inverter developed at Fraunhofer ISE for the uninterruptible power supply (UPS) reached efficiencies of up to 98.7 %. By using silicon carbide transistors, 10 kW power at a volume of only 5 liters could be realized.

The efficiency is particularly important for online UPS systems, since short voltage interruptions in the grid must be compensated while at the same time the consumer must be permanently supplied via the USP. These results can be transferred to other areas in power conversion where weight and efficiency play a large role.

Battery Stack for Stationary Applications

The prototype shown here is based on an aqueous cell chemistry and acts as a battery storage device for stationary applications. The device is inherently safe and in accordance with the objective (i.e. non-mobile applications) has not been optimized with respect to energy density but rather with respect to the lowest total cost of ownership (TCO).

Therefore, the sustainable and inexpensive materials were used for the manufacture. With its flexible architecture, the unit can be adapted to meet special requirements (e.g. high power). Fraunhofer ISE provides services in designing, constructing, testing and certifying electrochemical storage devices.

Sector Coupling with Hydrogen

The exhibit shows the possibilities of sector coupling with hydrogen. With its on-site solar hydrogen filling station and hydrogen feed-in plant, Fraunhofer ISE has two examples of the manifold possibilities for using hydrogen in the energy system. With the help of a PEM electrolyzer, electricity is used to split water and produce hydrogen, which is then stored in pressurized tanks or discharged directly into the respective sectors.

The hydrogen feed-in plant supplies the gas network with renewable gas. Fraunhofer ISE uses both platforms as research platforms to test new components for hydrogen and natural gas applications as well as to test new operating modes of electrolysis, refueling stations and feed-in plants.

The Department of Chemical Energy Storage at Fraunhofer ISE offers customers the opportunity to test their product developments in the practice on Fraunhofer ISE’s hydrogen plants. In addition, Fraunhofer ISE has many years of experience with the in-house developed simulation toolbox "H2ProSim", which provides the key competence for the design and evaluation of complex hydrogen systems.

Woven Wire Heat Exchanger for Latent Heat Storage

Protoypes of woven wire heat exchangers are exhibited for latent heat storage that use phase change materials as storage medium. For operation a heat transfer fluid flows through the capillary tubes. The heat exchanger is surrounded by phase change material, or PCM, which melts and crystallizes respectively storing and releasing heat. The low thermal conductivity of PCM limits the thermal power of the storage.

In the prototypes shown, the surface area is enlarged by a applying a metal fabric to compensate the low thermal conductivity. The heat exchangers consist of capillary tubes with a diameter of 2 mm and 100 µm wire fabric which is welded to the tubes. The actual configuration of the fabric leads to a heat transfer surface that has three times the area of the bare tubes. Compared to conventional structures like fin wires, woven wires save material and greatly increase the surface area.

Talks from Fraunhofer ISE Researchers at the IRES Conference and the ESE Forum:

12.03. 15:10 h: Christian Bischoff
»Wässrige Zink-Ionen-Technologie für stationäre Batteriespeicheranwendungen« (ESE Forum)

13.03. 9:00 h: Björn Nienborg
»Ecological life cycle assessment of thermal energy storage concepts for building applications« in »Thermal«

13.03. 11:20 h: Sebastian Gamisch
»Transient Behavior of the Thermal Management for Cylindrical Li-Ion-Batteries based on Phase Change Material Composite« in »Batteries«

13.03. 12:00 h: Christopher Voglstätter
»Energy Network Freiburg – Hydrogen Generation And Feed-in In The Context Of Municipal Distribution Grids« in »Applications, Case Studies, System Analysis«

13.03. 12:20 h: Nikolas Knetsch
»Techno-economic Assessment Of Different Design And Operation Concepts Of A Power To Hydrogen Plant Fed By A Photovoltaics Power Plant« in »Storage on the move«


Further Information: https://www.energie.fraunhofer.de/en/events-trade-fairs/allianz-energy-storage_2...

Weitere Informationen:

https://www.ise.fraunhofer.de/en/press-media/press-releases/2019/energy-storage-...

Karin Schneider | Fraunhofer-Institut für Solare Energiesysteme ISE

More articles from Trade Fair News:

nachricht First implementation of Gecomer®-Technology in a Collaborative Robot
21.03.2019 | INM - Leibniz-Institut für Neue Materialien gGmbH

nachricht Novel sensor system improves reliability of high-temperature humidity measurements
20.03.2019 | Universität des Saarlandes

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Magnetic micro-boats

Nano- and microtechnology are promising candidates not only for medical applications such as drug delivery but also for the creation of little robots or flexible integrated sensors. Scientists from the Max Planck Institute for Polymer Research (MPI-P) have created magnetic microparticles, with a newly developed method, that could pave the way for building micro-motors or guiding drugs in the human body to a target, like a tumor. The preparation of such structures as well as their remote-control can be regulated using magnetic fields and therefore can find application in an array of domains.

The magnetic properties of a material control how this material responds to the presence of a magnetic field. Iron oxide is the main component of rust but also...

Im Focus: Self-healing coating made of corn starch makes small scratches disappear through heat

Due to the special arrangement of its molecules, a new coating made of corn starch is able to repair small scratches by itself through heat: The cross-linking via ring-shaped molecules makes the material mobile, so that it compensates for the scratches and these disappear again.

Superficial micro-scratches on the car body or on other high-gloss surfaces are harmless, but annoying. Especially in the luxury segment such surfaces are...

Im Focus: Stellar cartography

The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.

A special technique allows astronomers to resolve the surfaces of faraway stars. Those are otherwise only seen as point sources, even in the largest telescopes...

Im Focus: Heading towards a tsunami of light

Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.

"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...

Im Focus: Revealing the secret of the vacuum for the first time

New research group at the University of Jena combines theory and experiment to demonstrate for the first time certain physical processes in a quantum vacuum

For most people, a vacuum is an empty space. Quantum physics, on the other hand, assumes that even in this lowest-energy state, particles and antiparticles...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

International Modelica Conference with 330 visitors from 21 countries at OTH Regensburg

11.03.2019 | Event News

Selection Completed: 580 Young Scientists from 88 Countries at the Lindau Nobel Laureate Meeting

01.03.2019 | Event News

LightMAT 2019 – 3rd International Conference on Light Materials – Science and Technology

28.02.2019 | Event News

 
Latest News

To proliferate or not to proliferate

21.03.2019 | Life Sciences

Magnetic micro-boats

21.03.2019 | Physics and Astronomy

Motorless pumps and self-regulating valves made from ultrathin film

21.03.2019 | HANNOVER MESSE

VideoLinks
Science & Research
Overview of more VideoLinks >>>