What question did this study set out to answer?

To review heat transfer mechanisms and compare existing and emerging cooling configurations used to enhance the power density of electric traction motors.

April 26, 2021IEEE Transactions on Transportation ElectrificationOpen Access

Traction Motor Cooling Systems: A Literature Review and Comparative Study

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Authors

PGPeer-Ole GronwaldVolkswagen Group (Germany)TKThorsten A. KernUniversität Hamburg

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Implication

Comparative review demonstrates heat transfer trade-offs across cooling configurations in electric traction motors, indicating paths to maximize power density.

Key Points

To review heat transfer mechanisms and compare existing and emerging cooling configurations used to enhance the power density of electric traction motors.
Conducted a literature review compiling geometry-based heat transfer equations for rotor shaft cooling, spray cooling, air convection, bearing heat transfer, and stator-housing interfaces.
Developed a lumped parameter thermal network (LPTN) on an established motor design to model and contrast the thermal behavior of different cooling methods.
Synthesized calculation formulas and heat transfer phenomena across multiple traction motor cooling configurations into a unified reference framework.
Identified key operational trade-offs and relative advantages of diverse cooling approaches—including spray, air, and shaft cooling—using LPTN simulation data.

Cite This Study

Gronwald et al. (2021) studied this question.

synapsesocial.com/papers/69fbeb26b5ea8fa7c5dfbb17 https://doi.org/10.1109/tte.2021.3075844

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Implication

Comparative review demonstrates heat transfer trade-offs across cooling configurations in electric traction motors, indicating paths to maximize power density.

Traction Motor Cooling Systems: A Literature Review and Comparative Study

Discussion

Member takes

Implication

Key Points

Cite This Study

Traction Motor Cooling Systems: A Literature Review and Comparative Study

Discussion

Member takes

Implication

Key Points

Cite This Study

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