Pictogram Lifetime Model Winding Insulation

Research Project: Lifetime model winding insulation

Institute of Machine Components (IMA)

Development of a holistic lifetime model for the winding insulation of electrical machines on the basis of the acting damage mechanisms and their different load levels
[Photo: Philipp Mell]

The reliability of electric vehicles is a key aspect to satisfy the market requirements in terms of lifetime. However, a verified lifetime model of the critical electromechanical components is missing so far. Increases in transistor switching speed, voltage levels and frequency harmonics of the dynamically evolving inverters increase the electrical stress on the motor winding insulation and lead to partial discharges (PD), which can reduce the life of the electrical machine to an unacceptable level. The aging process of the winding insulation is associated with several influencing factors, including electrical, thermal and mechanical stresses. Therefore, this project investigates the effects of the main influencing factors on the insulation lifetime, resulting in a statistical lifetime model.

detailed project description (.pdf)

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IGF project 21658 N:  funding website.


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This image shows Philipp Mell

Philipp Mell

M. Sc.

Research Associate

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