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4-Coil System

Posted 24 nov. 2013, 04:22 UTC−5 Low-Frequency Electromagnetics, RF & Microwave Engineering Version 4.3a, Version 4.4 3 Replies

Wilson Tan
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Hi all, I am new in Comsol and I'm trying to model a 4-coil system consisting of Source coil, Transmitter coil, Receiver coil and Load coil. Basically, there will be a voltage source supplied to the Source coil and the Transmitter coil which is placed beside it will pick up the magnetic field produced by the Source coil and thus current will be induced in the Transmitter coil. On the other hand, these Transmitter coil and Receiver coil are tuned to the same resonant frequency. So, magnetic field will be formed around the Receiver coil and thus current will be induced in Load coil where I need to measure the efficiency of the power transfer from Source coil to Load coil.

What I have done so far is, I use AC/DC module where I set multi-turn domain to all the coils and I excite the coil with circuit. There is a AC voltage source connected to the Source coil and I manage to simulate the magnetic flux density around the Source coil. But I do not see any magnetic field formed around the Receiver coil which is resonantly coupled to Transmitter coil.

Can someone give me some guidance on how to simulate this correctly? Thank you very much.
3 Replies Last Post 3 janv. 2014, 06:50 UTC−5
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Hello Wilson Tan

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V.Monesh prasanth
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Posted: 1 decade ago 27 déc. 2013, 05:12 UTC−5
Hi,

Attach your module let me try to fix the problem.


cheers

Monesh
Hi, Attach your module let me try to fix the problem. cheers Monesh
Mahmood Farman
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Posted: 1 decade ago 1 janv. 2014, 01:17 UTC−5
Hy Dear Monesh.

I also am working in AC/DC module, can you please please give me a little guidance. We are a group of three persons and all of us are unable to sort out that from a large time.

Kindly have an overview of my issue:
What I am trying to do is which study I should carry out for voltage induction from a rectangular beam of magnet to a simple coil?

What I am trying is Moving Mesh, Solid Mechanics for fixing one side of a simple rectangular beam and applying force for displacement and Magnetic Field physics. I don't know that should I use these three physics collectively or it can be done simply. I tried moving mesh model, transformer model but could not proceed.
And when I carry out time dependent study, I cannot simulate magnetic field along with moving mesh and solid mechanics and error is still intact.
Hy Dear Monesh. I also am working in AC/DC module, can you please please give me a little guidance. We are a group of three persons and all of us are unable to sort out that from a large time. Kindly have an overview of my issue: What I am trying to do is which study I should carry out for voltage induction from a rectangular beam of magnet to a simple coil? What I am trying is Moving Mesh, Solid Mechanics for fixing one side of a simple rectangular beam and applying force for displacement and Magnetic Field physics. I don't know that should I use these three physics collectively or it can be done simply. I tried moving mesh model, transformer model but could not proceed. And when I carry out time dependent study, I cannot simulate magnetic field along with moving mesh and solid mechanics and error is still intact.
kishore naik
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Posted: 1 decade ago 3 janv. 2014, 06:50 UTC−5
HI prasanth,
Can you help me
I modelled a 3D spiral coil with two turns, of two different coil separated by distance. I applied the current density for the coils. I want to evaluate self inductance and mutual inductance between the coils then coupling coefficient. I evaluated self inductance by L= 2*Wm/I^2, where Wm is energy stored and I is current. Now i have to find the mutual inductance between the coils (as i done this using multiturn coil domain in 2D, but i dont have any idea how to use by in case of current density applied to coil as in global evaluation there is no inductance parameter ). I am attaching link here, as i can not attach model due to size

drive.google.com/file/d/0B7S7tMagjLw1OHk5SlNoTVQ5Qzg/edit?usp=sharing
--
kishore Naik Mude
HI prasanth, Can you help me I modelled a 3D spiral coil with two turns, of two different coil separated by distance. I applied the current density for the coils. I want to evaluate self inductance and mutual inductance between the coils then coupling coefficient. I evaluated self inductance by L= 2*Wm/I^2, where Wm is energy stored and I is current. Now i have to find the mutual inductance between the coils (as i done this using multiturn coil domain in 2D, but i dont have any idea how to use by in case of current density applied to coil as in global evaluation there is no inductance parameter ). I am attaching link here, as i can not attach model due to size https://drive.google.com/file/d/0B7S7tMagjLw1OHk5SlNoTVQ5Qzg/edit?usp=sharing -- kishore Naik Mude

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