HyLeiT is a collaborative project part of the BMBF lead project H2Giga, which deals with the series production and scale-up of water electrolyzers. HyLeiT's research covers the cross-sectional "electric hydrogen system technology". Central research topics are cost-optimized systems and converter technology, as well as the grid integration of systems producing green hydrogen.
The project is coordinated by the Fraunhofer Institute for Energy Economics and Energy System Technology IEE in Kassel. Other partners are SMA Solar Technology AG, Infineon Technologies AG, the Technical University of Dresden and the Bonn-Rhein-Sieg University of Applied Sciences.
HyLeit aims to develop a new generation of electrolysis power converters and electrical system technology with the following characteristics:
- a significant reduction in costs compared to the current state of the art
- improved DC power quality for the electrolyser, as well as increased reliability and safety
- as well as ensuring grid compatibility and grid serviceability options
The following approaches are being pursued for this purpose:
- Development of adapted power converter technology with which different operating states of the electrolysis and the degradation of the stacks can be efficiently controlled.
- Use of optimized semiconductor components for better performance (grid serviceability, high efficiency) and lower costs (reduction of passive components such as heat sinks) of new electrolysis rectifiers compared to the state of the art.
- Creation of real-time-capable simulation models of the electrolysis stacks
- Real-time-capable grid models for investigations into grid stability and avoidance of grid repercussions when operating electrolysis systems in grids with a high proportion of renewable energies.
- Provision of system services with volatile generation from renewable energies
- Development of tools for the metrological and model-based qualification of components and systems
- Optimized power converter design in a P-HiL test environment using real-time capable electrolyser and grid models.
Fraunhofer Institute for Energy Economics and Energy System Technology