Virtual Electric Propulsion system

Purpose and goal

The purpose of the project is to develop a system model architecture and computer platform for the analysis, design, and optimization of electric powertrains in vehicles. The main purpose of the optimization is to achieve a system design that is optimized with respect to several conflicting objectives: (i) cost; (ii) weight; (iii) electromagnetic compatibility problems; (iv) biological effects and; (v) other performance measures such as output power and efficiency of the electric powertrain.

Expected effects and result

In the project electric circuit models and electromagnetic field models have been developed in the time and frequency domain. This has mainly been done using Python and Modelica where FMI has been used to combine models into a complete model for optimization with respect to several objectives. As a part of this work a comercial modelica library has been developed, Electrification Library. Furthermore, several scientific articles have been published from the project.

Planned approach and implementation

The project was divided into five work packages. The first work package focused on the design and optimization of the electric powertrain based on physical models developed in the second work package. As one necessary input to work package two, the sub-system models were developed in the third work package; battery, power inverter and electric motor etc. These parts are connected by cables modelled in the fourth work package, providing necessary input to work package two. Finally, the fifth work package focused on model validation using measurements.