GreenHyDAB
Green Hydrogen Through DC-Coupled PV Systems
Both Queensland and Bavaria have a strategic advantage in PV generation capacity, being regions with high solar energy potential. Queensland, known as Australia's sunshine state, is further expanding its PV generation, mirroring Bavaria’s efforts. Hydrogen is central to achieving a CO2-neutral energy system in both regions.
This project boosts green hydrogen production efficiency and reduces costs by integrating electrolysers directly into PV plants using advanced DC/DC converters, bypassing the need for grid-connected inverters and their certifications.
The developed hardware and software in this project simplifies retrofitting existing PV plants for hydrogen generation, reducing hydrogen costs, and enhancing PV energy utilization and grid integration. Central to this is a robust, efficient proof of concept converter with galvanic isolation, which ensures compatibility and minimal energy loss. Outcomes include scalable green hydrogen production, promotion of energy storage and decarbonisation, and climate goal contributions. The results are developed using different research approaches, from analytical description and simulation to relevant prototyping tests in the laboratory, with both scientific partners.
Our vision is to revolutionise the production of green hydrogen by increasing efficiency and reducing costs through the innovative integration of electrolysers and photovoltaic systems. By utilising advanced DC/DC converters that enable precise power regulation directly from the PV system to the electrolyser, we eliminate the need for expensive and complex grid-connected inverters. Our methods streamline the retrofitting of existing PV systems for hydrogen production, reducing costs, improving PV energy utilisation and enabling seamless grid integration. At the heart of this transformation is a state-of-the-art galvanic isolation proof-of-concept converter that maximises compatibility and minimises energy loss. This initiative will scale the production of green hydrogen, drive energy storage solutions, support decarbonisation efforts and make an important contribution to global climate goals
Term: 15.10.2025 - 14.10.2027
Employees:
- Jakob Vellinger
Institutions:
- Faculty of Electrical Engineering and Information Technology
- Institute for Sustainable Energy Systems (ISES)
Project management:
Funding body:
- Bavaria Queensland Research Alliance
Project partner:
- Queensland University of Technology
- EcoJoule Energy Pty Ltd
- Actensys GmbH
