ComElCo - Competitive Electrolyzer Converters

Challenge
Green hydrogen produced with renewable electricity is seen as one of the critical catalysts for the global transition to sustainable energy and net-zero emission economies. A significant increase in the use of electrolysis technologies is expected. Several countries are already working on electrolysis projects, and the number and size of these projects are anticipated to grow substantially. With the increased size of electrolysers, the power electronics used in them have become one of the key elements for affordable green hydrogen production.

As the electrolysers grow to sizes of 100 MVA and above, the interconnection of the power converter with the electricity grid becomes crucial. Additionally, power electronics are required to ensure high efficiency and low capital costs to support the desired growth in hydrogen production.

Project Solution
To address this challenge, ComElCo is developing power electronics converters for electrolysers that ensure improved efficiency, low costs, and integration of grid services.

Project Impact

• Understanding the converter requirements for future electrolysers on a larger scale
• Determining the best power/converter topologies
• Developing converter models suitable for PtX simulations at the system level
• Demonstrating grid integration and optimal control, creating value from grid services
• Validating benefits in (a scaled-down) converter + electrolysis demonstration
• ComElCo Key Indicators
  • Expected cost and efficiency figures from both real and virtual designs
  • Target of achieving 2 €/kg H2

This project aims to develop solutions that can support the future scale of electrolysis production and contribute to cost-effective and sustainable green hydrogen production.

A part of MissionGreenFuels

Denmark has received four green, mission-driven research and innovation partnerships aimed at making us a green frontrunner. These four green partnerships bring together the country's leading researchers, businesses, and organizations to position Denmark at the forefront of CO2 storage and utilization, Power-to-X, climate- and environmentally-friendly agriculture and food production, and circular economy focusing on plastics and textiles.

These areas have been designated by the political parties in the Danish parliament, based on Denmark’s strong positions.

One of these partnerships is MissionGreenFuels, which will work towards phasing out fossil fuels in shipping, heavy road transport, aviation, and the maritime shipping industry by 2030.

For more information, visit the website missiongreenfuels.dk