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coil impedance

Posted Jan 23, 2017, 9:08 a.m. EST Low-Frequency Electromagnetics Version 5.2 3 Replies

Bouhlal Abdelkader
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Hi every body,

I am a new user of COMSOL and I started to do a simulation of a nondestructive testing problem. My model is composed of a circular multiturn coil above a metal plate. an alternative current is applied to the coil, and I want to calculate the impedance of the coil.

please can anyone help me to solve my problem ?
3 Replies Last Post Jan 26, 2017, 9:37 a.m. EST
Dave Greve Certified Consultant
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Posted: 7 years ago Jan 24, 2017, 12:47 p.m. EST
If I am understanding you correctly- you should look in the application library for "coil above plate." In that example you can perform a Global Evaluation (under Derived Values) using the expression mf.ZCoil_1 (1 being the coil number) found under Coil Parameters.

This gives you the complex coil impedance.

DW Greve
DWGreve Consulting
If I am understanding you correctly- you should look in the application library for "coil above plate." In that example you can perform a Global Evaluation (under Derived Values) using the expression mf.ZCoil_1 (1 being the coil number) found under Coil Parameters. This gives you the complex coil impedance. DW Greve DWGreve Consulting
Bouhlal Abdelkader
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Posted: 7 years ago Jan 25, 2017, 5:19 a.m. EST
Thank you very much for your response, actually I already did what you said to me and I have got the impedance but when I look at the values I think that there is something wrong. may be I didn't set the poblem correctly.
1/Is there a difference in results if we use a circular multiturn coil or numeric multiturn coil?
2/ can I send you what I did to look at it when you have time?
Thank you very much for your response, actually I already did what you said to me and I have got the impedance but when I look at the values I think that there is something wrong. may be I didn't set the poblem correctly. 1/Is there a difference in results if we use a circular multiturn coil or numeric multiturn coil? 2/ can I send you what I did to look at it when you have time?
Nirmal Paudel Tribhuvan University/Electrical Engineering
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Posted: 7 years ago Jan 26, 2017, 9:37 a.m. EST
Hi Bouhlal,

The following Application Example include a collection of different types of coils in 3D, which I think is very useful for understanding the difference in the result.

www.comsol.com/model/3d-coil-types-in-comsol-multiphysics-42431

Best Regards,
Nirmal
Hi Bouhlal, The following Application Example include a collection of different types of coils in 3D, which I think is very useful for understanding the difference in the result. https://www.comsol.com/model/3d-coil-types-in-comsol-multiphysics-42431 Best Regards, Nirmal

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