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New EU project “Hyflow” to develop a smart hybrid energy storage system
Modern energy grids rely on renewable energies such as wind and solar power and are characterised by higher fluctuations in both power generation and energy consumption. In order to absorb resulting power peaks and to cope with the increased demand for renewable energies, modern energy grids need more dynamic storage systems. The task is to optimally dimension the capacity and power of such energy storage systems and to ensure a secure, affordable and environmentally friendly energy supply. Smart combinations of storage systems, so-called hybrid storage systems, offer a solution for this. The development of such an efficient, sustainable and cost-effective hybrid system is the objective of the European research project HyFlow, in which eleven partners from Germany, Italy, Spain, the Czech Republic, Austria, Portugal and Russia work together under the coordination of Landshut University of Applied Sciences. HyFlow is being funded by the EU until 2023 with EUR 4 million.
Renewable energy sources such as wind power and photovoltaics continuously contribute to electricity generation all over Europe – but their contribution varies as much as the electricity demand of private and public grids. The resulting production and load peaks are a challenge for Europe's energy grids. To meet these demands and reduce dependence on fossil fuels, flexible storage systems tailored to a wide range of applications are needed.
High storage capacity and high power
The HyFlow project addresses this challenge and develops a powerful model of a hybrid energy storage system that can meet high energy and power requirements. The project thus contributes to ensuring the effectiveness and stability of private and public energy grids in the future.
To this end, the researchers want to combine two different systems – a high-performance vanadium redox flow battery and a supercapacitor. "A redox flow battery has a large storage capacity, but can only be charged and discharged slowly. The supercapacitor, on the other hand, has short charging times with low energy density. The hybridisation is intended to create an energy storage system that combines the advantages of both systems: high storage capacity and high power", says Prof. Karl-Heinz Pettinger, Scientific Director of the Landshut University of Applied Sciences Technology Centre for Energy, who coordinates the project.
Powerful, sustainable and cost-effective
In future, the newly developed flexible storage system will be able to balance the power and energy demand flexibly during critical grid conditions, e.g. during high load or generation peaks, whether for seconds or entire days. In these demanding applications, hybridisation leads to more efficient storage systems, with longer lifetimes as well as higher adaptability and potentially lower costs. The new hybrid system works in the most environmentally friendly and sustainable way possible by not using critical resources. Researchers are developing strategies to recycle vanadium for redox flow batteries.
Increasing Europe's competitiveness in the battery sector
The use of optimised components for hybrid systems guarantees security of supply for energy grid systems - with increased current density, efficiency and lifetime. In addition, an innovative management system provides a high level of control and adaptability through computer analytics and control algorithms. The HyFlow project thus supports Europe's competitiveness in the battery sector for stationary storage applications.
Network enormously important
"That Landshut University of Applied Sciences is able to lead and coordinate this ambitious EU project is something very special for us," Pettinger proudly reports. The idea for the project came about in 2019 as part of a conference of the FSTORE research platform, where initial contacts with potential partners were made. The fact that the grant application has now been rated with the highest possible score is "a tribute to the entire team" and shows how important two things are for this success: "Perseverance and a good network."
Prof. Dr. Karl-Heinz Pettinger
Tel. +49 (0)871 – 506 276
Dr Reinhart Schwaiberger (General Manager TZE), Christina Zugschwert (project member HyFlow), Prof. ...
Landshut University of Applied Sciences
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