Thesis work - Thermal measurements of electrical insulation systems

Scania is now undergoing a transformation from being a supplier of trucks, buses and engines to a supplier of complete and sustainable transport solutions.

Background
Scania is going through a transformation to become the provider of complete and sustainable transport solutions. Electrified vehicles is one large part of that transformation. In order to obtain electric machines with high efficiency, high power density and high reliability, materials with improved thermal conductivity is of importance.

The properties of the materials in the electrical insulation system can be evaluated by using motorettes, which are small segments of the stator ring. By using motorettes instead of full size stators, many more material combinations can easily be measured.

Target
The target with the thesis project is to find material combinations for the electrical insulation system that provide an optimized heat transfer from the copper conductors to the stator stack, while maintaining the required electrical properties. Motorettes will be assembled with different material combinations, followed by thermal measurements before and after aging. The obtained data will then be used in a thermal simulation to evaluate the impact each material has on the heat transport.

In parallel, electrical properties of the same materials will be evaluated within another thesis project at the same group - Materials Technology for Electrification and Electronics at Scania R&D in Södertälje, Sweden.

Description of the assignment


• Assemble motorettes
• Perform thermal measurements of the different insulation systems, before and after thermal aging of the materials
• Set up a thermal model of the motorette in a simulation software and use experimental data as input for the model
• Present the results in a written report and in an oral presentation

Education
M.Sc. Student in:        Materials Science, Engineering Physics, Mechanical Engineering or other relevant programme
Number of students:     1
Start of work:               Jan/Feb 2022
Estimated duration:       20 weeks, full time 40 hours per week

Contact person and supervisor
Anders Thibblin, Ph.D., Senior Engineer, Materials Technology.
anders.thibblin@scania.com  08-553 52 455

Application
Your application should contain CV, personal letter and copies of grades


Scania is a world-leading provider of transport solutions. Together with our partners and customers we are driving the shift towards a sustainable transport system. In 2020, we delivered 66,900 trucks, 5,200 buses as well as 11,000 industrial and marine power systems to our customers. Net sales totalled to over SEK 125 billion, of which over 20 percent were services-related. Founded in 1891, Scania now operates in more than 100 countries and employs some 50,000 people. Research and development are mainly concentrated in Sweden. Production takes place in Europe and Latin America with regional product centres in Africa, Asia and Eurasia. Scania is part of TRATON GROUP. For more information visit: www.scania.com.