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Electric Motor Material Changes gives wrong Torque

Posted May 8, 2021, 1:13 p.m. EDT Low-Frequency Electromagnetics, Structural & Acoustics Version 5.6 0 Replies

Jhelan Suggun
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Hi all,

I have an electric motor made in 2D space dimension and wanted to find the torque for different material used on the stator. I have tried to use different types of silicon steel (the ones which are on the COMSOL library) and soft iron (without losses). I have attached a picture of the motor design with the highlighted domain to be where the materials are applied to.

Only when I use soft iron (without losses) that I get an actual torque output compared to any other materials I used. I have attached the graph for each material. I ran a parametric sweep for the current input in the coils and for the soft iron, I managed to get a varying torque to current graph whereas for any other material, the torque remains the same as when I apply 0 A or 10000 A.

Can anyone explain to me the reason for this problem please?

Thanks, Ryan

0 Replies Last Post May 8, 2021, 1:13 p.m. EDT
COMSOL Moderator

Hello Jhelan Suggun

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