BeHyPSy

In this joint project, hybrid-electric powertrains based on hydrogen technology are being researched for aircraft with CS-23 certification. The sub-project will support the design, optimization, testing and application of the drive system with the aid of model-based system development. The climate impact of the propulsion system will also be taken into account during development. Typically, air cooling can be provided for fuel cell systems up to about 5 kW power. Air cooling is advantageous in terms of gravimetric and volumetric power density. In order to realize higher power with air cooling, several small fuel cell systems can be used. Great advantages are offered if each of these small fuel cell systems supplies a pool pair group of the electric motor by means of an inverter. In the integrated system also eliminates the need for any intermediate converters and the power electronics can also be electronics can also be made smaller. This project focuses on this novel architectural concept. center. A difficult issue is the right choice of the number and size of fuel cell systems and their operating strategies. their operating strategies. These are to be optimized numerically in the project. Compared to other work, this project is one level of abstraction more detailed. For the solution of the problem natural-analog optimization methods and statistical methods will be used to solve the problem. In particular the interface to life cycle assessment should be sought with the optimization constraints, so that the optimization provides not only the optimal system architecture but also key figures on the climate impact. With With the help of statistical experimental design, optimal operating strategies are to be found.