Detailed Windage losses calculations, rotating electric motors.

[almarsd]

Hi everyone,

Long time reader first time poster. A little background on myself, 4th year in the field of ME mostly in simulation and analysis (FEA).

I am currently working on a project of a high speed electric motor. I am putting together all the losses from the rotating motor (Copper loss, back iron loss, etc.). The one item that has very little information is windage losses.

Currently, I am using a paper from NASA

PREDICTION OF WINDAGE POWER LOSS IN ALTERNATORS by James E, Vkzncik

(I am not allow to post links yet.)

or search "NASA windage losses" in Google, first PDF link.

It has a good write up on windage losses but does not give any background on where this heat goes.

Would you guys have links to more detailed papers/books on Windage losses?

Does the cooling fluid take most of the heat out? or Does the Stator absorb 50% of the heat?

Thank you for reading my post.

Al

 

[Achy47]

ison


Hi Alison,

Thank you for sharing your project with us. I have some experience in the field of electric motors and can offer some insights on windage losses.

Windage losses occur when the rotor of the motor rotates and creates air turbulence, which results in friction and heat generation. This heat is dissipated through various means, including the cooling fluid, stator, and the motor housing itself. The exact distribution of heat dissipation depends on the design of the motor and the cooling system used.

I suggest looking into the book "Electric Motors and Drives: Fundamentals, Types and Applications" by Austin Hughes for more detailed information on windage losses and their effects on motor performance. Another useful resource is the IEEE Transactions on Energy Conversion, which has published several papers on windage losses in electric motors.

Additionally, it might be helpful to consult with a specialist in the field of electric motors or reach out to manufacturers for their insights and data on windage losses in similar motors. Good luck with your project!