HEPODIS is an aviation power converter developed by Skylife Engineering as part of the European Clean Sky 2 (CS2) program, which aims to advance the electrification of aircraft through more efficient and safer systems.

At the heart of the project is the development of the HVTRU (High Voltage Transformer Rectifier Unit), a system that takes a 115 V three-phase AC input and converts it to a 270 V DC output, achieving a nominal power of 15 kW and an efficiency exceeding 90% in steady-state operation.

The converter incorporates multiple protection functions against short circuits, overheating, overvoltage, undervoltage, overcurrent, and open-phase conditions. It also features a soft-start function, ensuring reliable operation under critical conditions. In terms of electrical performance, it guarantees an input current THD of less than 5% and a power factor greater than 95%—key parameters for the sustainability and energy quality of onboard systems.

Thanks to HEPODIS, Skylife Engineering has helped improve the efficiency, reliability, and safety of aviation electrical systems, aligning with European goals for sustainability, technological innovation, and emissions reduction in air transport.

The HEPODIS project was carried out between 2016 and 2020 as part of the European call for proposals H2020-CS2-CFP02-2015-01, funded by the European Commission through the Joint Undertaking Clean Sky 2. Skylife Engineering had a budget of 621,000 €, with a grant covering 70% of that amount, as part of a consortium with a total budget of 1,428,195 €.

At Skylife Engineering, we lead projects thanks to our extensive experience in integrating advanced technologies and our strong commitment to sustainability in aviation. We work closely with each project manager, applying a rigorous process of review and continuous improvement. This approach ensures solutions of the highest quality—safe and effective—that have a real and lasting impact on the industry.