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Comprehensive Electric Motor Cooling Modeling
Technical Paper
2022-01-0724
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A comprehensive 3D Computational Fluid Dynamics (CFD) with conjugate heat transfer (CHT) tool was developed in-house for a Tesla Model 3 electric motor. To accurately predict the power loss (heat generation) inside the electric motor, the electromagnetic process was solved to obtain the spatial-dependent power loss in the rotor, stator, and windings. CFD was utilized for simulating the coolant oil flow using the multiphase Volume of Fluid (VOF) approach and Finite Element Analysis (FEA) was used for simulating the thermal process within the solid domains. These three separate analysis modules (electromagnetic, fluid flow and thermal solid) were coupled strongly to enable two-way interactions. Thermal results obtained from the final converged simulations were compared to the test data obtained from the thermocouple measurements for the two most representative operating points of this e-motor and showed reasonable predictions with similar trend as observed in the test. The overall variations were under 2 °C at all thermocouple locations which was within the margin of error of a standard K-type thermocouple.
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Citation
Abidin, Z., Zhang, H., and Shah, B., "Comprehensive Electric Motor Cooling Modeling," SAE Technical Paper 2022-01-0724, 2022, https://doi.org/10.4271/2022-01-0724.Also In
References
- Fan , J. , Zhang , C. , Wang , Z. , Dong , Y. et al. Thermal Analysis of Permanent Magnet Motor for the Electric Vehicle Application Considering Driving Duty Cycle IEEE Transactions on Magnetics 46 6 2010 2493 2496
- Zhang , Y. , McLoone , S. , Cao , W. , Qiu , F. et al. Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine IEEE Transactions on Energy Conversion 32 4 2017 1468 1478
- Liu , Z. , Winter , T. , and Schier , M. Direct Coil Cooling of a High Performance Switched Reluctance Machine (SRM) for EV/HEV Applications SAE Int. J. Alt. Power. 4 1 162 169 2015 10.4271/2015-01-1209
- Guo , F. and Zhang , C. Oil-Cooling Method of the Permanent Magnet Synchronous Motor for Electric Vehicle Energies 12 15 2019 2984
- Komeza , K.E. , Lefik , M. , Juszczak , E.N. , Roger , D. , Takorabet , N. , Meibody-Tabar , F. Numerical Analysis of Thermal and Mechanical Field in the High Temperature Permanent Magnet Synchronous Machine 2017 IEEE Transportation Electrification Conference (ITEC-India) 2017, Dec 13 1 6 IEEE
- Kapatral , S. , Iqbal , O. , and Modi , P. Numerical Modeling of Direct-Oil-Cooled Electric Motor for Effective Thermal Management SAE Technical Paper 2020-01-1387 2020 https://doi.org/10.4271/2020-01-1387.
- Srinivasan , C. , Yang , X. , Schlautman , J. , Wang , D. et al. Conjugate Heat Transfer CFD Analysis of an Oil Cooled Automotive Electrical Motor SAE Int. J. Adv. & Curr. Prac. in Mobility 2 4 1741 1753 2020 10.4271/2020-01-0168
- Hayes , J.G. and Goodarzi , G.A. Electric Powertrain John Wiley and Sons 2018
- Chapman , S.J. Electric Machine Fundamentals 5th McGraw Hill 2010