Coupling FMUs to Electric Circuits in Multiphysical System Simulation Software for the Development of Electric Vehicles

This work is devoted to the analysis of electric circuits stemming from automated modeling processes in system simulation software. Modern applications such as HEV (hybrid electric vehicle), BEV (battery electric vehicle) and FCEV (fuel cell electric vehicle) require not only couplings of electric networks with mechanical, thermal, fluid and gas systems. In many cases it is necessary to extend or control the physics with grey box models like FMUs (Functional Mock-up Units). In particular, the coupling of electric systems with FMUs can be done on various levels (model exchange, co-simulation) via different interfaces (controller, electric, electric-thermal) and is therefore a challenging task. In this work we concentrate on a co-simulation approch for an electric-thermal coupling in a BEV model.