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3D model with multiturn coils in 1/4 symmetry

Posted Feb 2, 2016, 10:42 a.m. EST Low-Frequency Electromagnetics Version 5.2 2 Replies

Wei Zhang
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hallo,

i simulate a 3D model with ironcore and coil using 1/4 symmetry. My study is frequency domain at 30kHz. I have defined the coil by numeric multiturn coils. But the solution is wrong, cause the max. magnetic flux density is only 1e-8T. Is it problem of the setting for coil?

I have attached my model.

Looking for you advices and thanks in advance.

wei

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2 Replies Last Post Feb 3, 2016, 9:06 a.m. EST
Nirmal Paudel COMSOL Employee

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Posted: 9 years ago Feb 2, 2016, 1:12 p.m. EST
Hi Wei,

You would also have to add "Output" sub-feature just like the default "Input" in the Multi-Turn Coil 1 -> Geometry Analysis 1 on the other end of the coil.
See this example for detail: www.comsol.com/model/multi-turn-coil-winding-around-a-ferromagnet-23641

Also for modeling the symmetry/periodic boundary condition, the following blog post might be useful here:
www.comsol.com/blogs/exploiting-symmetry-simplify-magnetic-field-modeling/

Best Regards,
Nirmal
Hi Wei, You would also have to add "Output" sub-feature just like the default "Input" in the Multi-Turn Coil 1 -> Geometry Analysis 1 on the other end of the coil. See this example for detail: http://www.comsol.com/model/multi-turn-coil-winding-around-a-ferromagnet-23641 Also for modeling the symmetry/periodic boundary condition, the following blog post might be useful here: http://www.comsol.com/blogs/exploiting-symmetry-simplify-magnetic-field-modeling/ Best Regards, Nirmal
Wei Zhang
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Posted: 9 years ago Feb 3, 2016, 9:06 a.m. EST
Hi Nirmal,

i have added the ouput subnode and the solution is now very good.

Thank you very much again.

Best Regards,

wei
Hi Nirmal, i have added the ouput subnode and the solution is now very good. Thank you very much again. Best Regards, wei

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