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coil impedance

Posted 23 gen 2017, 09:08 GMT-5 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 26 gen 2017, 09:37 GMT-5
Dave Greve
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Posted: 8 years ago 24 gen 2017, 12:47 GMT-5
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: 8 years ago 25 gen 2017, 05:19 GMT-5
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: 8 years ago 26 gen 2017, 09:37 GMT-5
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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