HyFlow: Development of a sustainable hybrid storage system based on high power vanadium redox flow battery and supercapacitor – technology


Developing low-cost energy storage systems is a central pillar for a secure, affordable and environmentally friendly energy supply based on renewable energies. A hybrid energy storage system (HESS) can be capable of providing multiple system services (e.g. frequency regulation or renewable balancing) at low cost and without the use of critical resources. Within HyFlow, an optimized HESS is designed consisting of a high-power vanadium redox flow battery (HP-VRFB), a supercapacitor (SC), advanced converter topologies and a highly flexible control system that allows adaptation to a variety of system environments. The system design enables modular long-term energy storage through HP-VRFB, while the SC as a power component ensures high load demands to be handled. The flexible Energy Management System (EMS) will be designed to perform high level of control and adaptability using computational analysis and hardware development. Within HyFlow, this innovative HESS is developed and validated on demonstrator-scale (5 kW scale) including sustainability analysis. The scope is to base the HP-VRFB on recycled vanadium and thereby reduce the environmental impact as well as the costs of the HESS. The consortium will build upon lab-scale and industrial application-scale experimental data to derive models and algorithms for the EMS development and the optimization of existing VRFB and SC components. An industry-scale demonstrator (300 kW scale) provides the possibility to test even the fastest grid-services like virtual inertia. Outputs of the project support the whole value-chain and life cycle of HESS by developing new materials and components and adding them together with an innovative EMS. The development of the above described HESS especially through the flexible EMS allows a plethora usage potentials to be assessed. This will lead to the grid integration of the HESS where the full potential of the flexibility can thoroughly be qualified and optimized for market requirements.

Project details

Unibo Team Leader: Francesca Soavi

Unibo involved Department/s:
Dipartimento di Chimica "Giacomo Ciamician"

Fachhochschule Landshut-Universityof Applied Sciences(Germany)

Other Participants:
Fraunhofer Ipa (Germany)
ALMA MATER STUDIORUM - Università di Bologna (Italy)
Pinflow Energy Storage, S.R.O. (Czech Republic)
Bayerische Forschungsallianz Bavarian Research Alliance Gmbh (Germany)
Kit Karlsruhe Institute Of Technology (Germany)
Energieinstitut An Der Johannes Kepler Universitat Linz Verein (Austria)
Charge2c-Newcap Lda (Portugal)
Skolkovo Institute Of Science And Technology (Russian Federation)
Freqcon Gmbh (Germany)
Epic Power Converters Sl (Spain)

Total Eu Contribution: Euro (EUR) 3.999.557,50
Project Duration in months: 36
Start Date: 01/11/2020
End Date: 31/10/2023

Cordis webpage
Project website

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 963550 This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 963550