Electric traction motors

Inverter-fed electric machines have long been known in drive technology. However, the shift in mobility towards electric drives brings new requirements in terms of efficiency and functionality. The strength of the insulation, depending on the converter topology and ambient conditions, plays a decisive role in the reliability of the drives.

The Department of Systems and High Voltage Technology (AHT) is one of 8 departments from the fields of mechanical engineering and electrical engineering/technical computer science that have joined forces to form the Vehicle Systems Research Network (FAST). Among other tasks, it is the declared goal to jointly offer and carry out more complex, interdisciplinary projects.

Within the framework of the research association, the AHT department is working on the project: "Condition assessment of insulation materials used in vehicle drives when subjected to impulsive repetitive stresses". In particular, the focus of the condition assessment is on the basis of the partial discharge measurement technique. Fundamental investigations are carried out with regard to the partial discharge behavior of insulation systems under impulsive test voltages.

Furthermore, the possibility of a partial discharge measurement in end of line tests of electric traction motors is investigated as well as the integration of the partial discharge measurement system into a manufacturing process.