DLR PowerTrain Library
The DLR PowerTrain is a licensed Modelica library providing one-dimensional rotational mechanical components for vehicle powertrains, including automatic gearboxes, as well as components to model hybrid and pure electrical powertrains. Three-dimensional mechanical effects can be taken into account, e.g. when mounting a powertrain on a multi-body vehicle dynamics model. The library is commercially available at Dassault Systems.
Features of the Library:
- High fidelity models of manual, automatic and dual clutch transmissions
- Gear sets such as Lepelletier or extended Simpson
- Lossy gear models with efficient and robust handling of speed and torque dependent friction>
- To enable the prediction of attributes such as vehicle performance, fuel economy or drivability
- To enable full powertrain models and analyses
- Map-based internal combustion engines
- Electric traction motors and battery packs
- Drivelines with wide range of differentials (torque vectoring, torsen, etc.)
- Longitudinal dynamics of vehicles
- Various level of detail
- To optionally couple to multibody models of vehicles
- Enables e.g. to analyse interactions between powertrain and vehicle dynamics
The main energy storage unit is a Lithium-Ion battery pack. It powers the four wheel-mounted traction motors. Two DC/DC converters connect the 340 V high-voltage system with the 24 V low voltage system, which supply the steering and braking actuators as well as the onboard computer systems. In the PowerTrain library, both verified models of these components and ROboMObil’s powertrain architecture are available.