FKFS student project validates digital twin methodology on BEV powertrain

Figure 1: Prediction of the SOC of the HV battery of the Audi e-tron

Just in time for the 365th project day, 25 October 2023, around 25 interested listeners gathered at the FKFS to hear about the experiences and results of the first School for Talents cohort. The five participants Alexander Kaiser, Noah Wambsganß, Leon Breitenbücher, Julian Heib and Louis Weller were able to show the audience how they, equipped with an Audi e-tron 50 quattro and a ROSI dongle from ROSI Technology GmbH - a subsidiary of FKFS - planned and carried out 5000 km of test drives, recording and analysing powertrain-relevant variables.

The test drives took place as part of an IFS project, whereby the students were employed as student assistants at the FKFS and the rental vehicle was sponsored with financial support from the FKFS. Using the methodology developed at the FKFS, they were able to demonstrate how they trained neural networks using the generated data set in order to make time series predictions for individual submodels of the battery electric powertrain. A prediction of the SOC of the HV battery of the Audi e-tron on an exemplary drive around Stuttgart, which lasted over 2 hours and was carried out at an average speed of 36 km/h, is shown in Figure 1. For the FKFS, this represents a further use case with which the methodology could be validated and its potential for predictive capability in transient operation demonstrated.

Prof. Dr.-Ing. Casal Kulzer complimented the group on their great commitment beyond the scope of their studies, particularly emphasising the team's independent organisation. The event concluded with the handover of certificates to the team.

The School-for-Talents is a project at the University of Stuttgart that is funded by the German Research Foundation (DFG) as part of the Excellence Strategy of the German federal and state governments. The aim is to support high-achieving students beyond the curriculum and introduce them to research and scientific work.

Further information on the School-for-Talents in general can be found at: School for Talents | University of Stuttgart (

For information about the program at the institute: michael.grill(at), dirk.itzen(at)


Sabrina Reichert
Ph.: +49 711 685-65857