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How to calculate the impedance of copper wire using AC/DC

Posted Feb 9, 2016, 8:27 a.m. EST Low-Frequency Electromagnetics 2 Replies

Bin Sun
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Hi,

I am building the power cable using COMSOL AC/DC model. I want to ask if we have a copper wire, can we calculate the impedance of this wire? Should we use which interface(like es or ec)? should we have to use 3D model? Should we add some special constraint condition in physics? If there is any related examples, please share with me.


Thank you very much!

Best regards,

Bin
2 Replies Last Post Feb 24, 2016, 6:41 p.m. EST
Nirmal Paudel COMSOL Employee

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Posted: 8 years ago Feb 9, 2016, 2:54 p.m. EST
Hi Bin,

You could calculate coil inductance both in 2D and 3D. We have several examples available in the Applications Gallery, in particular the following examples in 2D-axisymmetry will be useful.
1. www.comsol.com/model/mutual-inductance-and-induced-currents-between-single-turn-coils-12653
2. www.comsol.com/model/mutual-inductance-and-induced-currents-in-a-coil-group-12679
3. www.comsol.com/model/mutual-inductance-and-induced-currents-in-a-multi-turn-coil-12687

Note that these examples are for the mutual inductance calculations using Single Turn Coil, Multi-Turn Coil and Coil Group feature. These features are also applicable to directly compute the inductance for a single coil or wire.
For 3D case, take a look at this power inductor example:
www.comsol.com/model/modeling-of-a-3d-inductor-10299

In addition, the following two blog posts will be useful here:
www.comsol.com/blogs/model-cables-and-transmission-lines-in-comsol-multiphysics/
www.comsol.com/blogs/computing-the-inductance-of-a-wire/

Hope this will be useful.

Best Regards,
Nirmal
Hi Bin, You could calculate coil inductance both in 2D and 3D. We have several examples available in the Applications Gallery, in particular the following examples in 2D-axisymmetry will be useful. 1. http://www.comsol.com/model/mutual-inductance-and-induced-currents-between-single-turn-coils-12653 2. http://www.comsol.com/model/mutual-inductance-and-induced-currents-in-a-coil-group-12679 3. http://www.comsol.com/model/mutual-inductance-and-induced-currents-in-a-multi-turn-coil-12687 Note that these examples are for the mutual inductance calculations using Single Turn Coil, Multi-Turn Coil and Coil Group feature. These features are also applicable to directly compute the inductance for a single coil or wire. For 3D case, take a look at this power inductor example: http://www.comsol.com/model/modeling-of-a-3d-inductor-10299 In addition, the following two blog posts will be useful here: http://www.comsol.com/blogs/model-cables-and-transmission-lines-in-comsol-multiphysics/ http://www.comsol.com/blogs/computing-the-inductance-of-a-wire/ Hope this will be useful. Best Regards, Nirmal
Bin Sun
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Posted: 8 years ago Feb 24, 2016, 6:41 p.m. EST
Thank you so much. It is very helpful.
Thank you so much. It is very helpful.

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