Heat transfer coefficients in a coupled 3-D model of a liquid-cooled IPM traction motor compared with measurements
Journal article, 2021

Modelling of electrical machines is constantly refined and it is now possible to couple numerical thermal models and electromagnetic models, thereby allowing to examine the thermal effects on motor materials. In this paper it is shown how a 3-D model of an interior permanent magnet (IPM) motor, including power loss in the end windings and the effect of air and liquid cooling can be made where simulation results are compared with measurements. Further, it is shown how the coolant inlet temperature and volumetric flow rate affects the heat transfer coefficient of the cooling duct for some load points within the torque-speed range of the motor.

Computational Fluid Dynamics

Interior permanent magnet electric machine; Thermal modelling

Traction motors

Finite element analysis

Atmospheric modeling

Computational modeling


Traction motors

Solid modeling

Permanent magnet motors

Conjugate Heat Transfer


Sonja Lundmark

Chalmers, Electrical Engineering, Electric Power Engineering

Emma Grunditz

Chalmers, Electrical Engineering, Electric Power Engineering

Torbjörn Thiringer

Chalmers, Electrical Engineering, Electric Power Engineering

Andreas Andreasson

Volvo Cars

Anders Bergqvist

Volvo Cars

Raik Orbay

Volvo Cars

Erik Jansson

Volvo Cars

IEEE Transactions on Industry Applications

0093-9994 (ISSN)

Vol. 57 5 4805-4814 9477036

Driving Forces

Sustainable development

Areas of Advance


Subject Categories

Energy Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering



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