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coil design
Posted Sep 2, 2013, 8:22 a.m. EDT Low-Frequency Electromagnetics, Mesh Version 4.3b 1 Reply
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Hello,
I work on a cold crucible magnetic modelisation with the mf physic around 10 kHz.
I want to design a 2 turns coil according to the real geometry (with little simplifications). I start with a 3D quarter of the real design (symetry axis) but I can't represent a quarter 2 turns coil (there is no coil group option like in 2D-axy; for defining 2 turns in series configuration).
With a quarter of the real design it's work well, but simulation are done with only one turn.
I think that I need to design all the geometry in order to define the 2 turn coil and have external boundaries to put a voltage on single turn coil domain.
I do this but I have always convergence issue "Divergence of the linear iterations".
I try the boundary single turn coil option (the coil is just a surface where it is possible to assign a coil thickness) with no more success. It converge but results are completly different in fonction of the mesh I use.
Anyone have an idea for design this coil or tips for meshing such a structure?
(I can't use lumped port due to the geometry of the coil as it is done in the inductor 3D tutorial)
Thank you for your help
I work on a cold crucible magnetic modelisation with the mf physic around 10 kHz.
I want to design a 2 turns coil according to the real geometry (with little simplifications). I start with a 3D quarter of the real design (symetry axis) but I can't represent a quarter 2 turns coil (there is no coil group option like in 2D-axy; for defining 2 turns in series configuration).
With a quarter of the real design it's work well, but simulation are done with only one turn.
I think that I need to design all the geometry in order to define the 2 turn coil and have external boundaries to put a voltage on single turn coil domain.
I do this but I have always convergence issue "Divergence of the linear iterations".
I try the boundary single turn coil option (the coil is just a surface where it is possible to assign a coil thickness) with no more success. It converge but results are completly different in fonction of the mesh I use.
Anyone have an idea for design this coil or tips for meshing such a structure?
(I can't use lumped port due to the geometry of the coil as it is done in the inductor 3D tutorial)
Thank you for your help
1 Reply Last Post Sep 4, 2013, 3:39 a.m. EDT
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Posted:
1 decade ago
Hello,
I respond to myself. I have found a solution for the modelisation of my 2 turn coil. I use impedance boundary layers for all conductive boundaries aswell for the coil. I use now mef physic with a terminal excitation. I make a parametric frequency study and the global evaluation give me negative resistance for terminal measurements (simulations look like the tutorial inductor 3D). I attach a simple mph file wich shows better what I am talking about.
What can you suggest to me?
Thank tou very much
I respond to myself. I have found a solution for the modelisation of my 2 turn coil. I use impedance boundary layers for all conductive boundaries aswell for the coil. I use now mef physic with a terminal excitation. I make a parametric frequency study and the global evaluation give me negative resistance for terminal measurements (simulations look like the tutorial inductor 3D). I attach a simple mph file wich shows better what I am talking about.
What can you suggest to me?
Thank tou very much
Attachments: