Experimental validation and parameter study of a 2D geometry-based, flexible designed thermal motor model for different cooled traction motor drives

For identifying new improvement potentials for electric traction motors, accurate models are needed. In this paper, a geometry-based 2D lumped parameter thermal network model for different electric traction motor and cooling concepts is studied and validated. In the second section, the design and functionality of the thermal model is explained. In the third section, the best fit of the literature correlations for describing the different heat transfer mechanisms was identified and a parameter study of the heat transfer coefficients was carried out and discussed. In the last section, the model is validated with measurement results from six different electric traction motors and drives units. For validation measurement results of stationary operating points, peak operating points and drive cycles are used. Based on the validation results, a model error of less than 10% is achieved for the most motor components in the different cooling concepts and traction motor designs. Inaccuracies and deviations are discussed and suggestions for improvement are made.

Subjects

cooling

traction motor drives

electric machines

model validation

road vehicles

DDC Class

600: Technik

620: Ingenieurwissenschaften

Funding(s)

Publikationsfonds 2021

More Funding Information

Publishing fees supported by Funding Programme Open Access Publishing of Hamburg University of Technology (TUHH).

Publication version

publishedVersion

Lizenz

https://creativecommons.org/licenses/by/4.0/

Name

wevj-12-00076-v2.pdf

Size

4.3 MB

Format

Adobe PDF

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Experimental validation and parameter study of a 2D geometry-based, flexible designed thermal motor model for different cooled traction motor drives