Example23 Toroidal Coil

General

The magnetic field produced by a toroidal coil is analyzed.
The vectors of the magnetic field and the magnetic flux density are solved.
Unless specified in the list below, the default conditions will be applied.
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Analysis Space

Item	Settings
Analysis Space	3D
Model unit	mm

Analysis Conditions

Item	Settings
Solvers	Magnetic Field Analysis [Gauss]
Analysis Type	Static analysis
Options	N/A

Set the Mesh Tab as follows.

Tab

Setting Item

Settings

Mesh

Meshing Setup

Automatically set the general mesh size: Deselect

General mesh size: 1[mm]

Model

Coil (Cur) is wound on the ferrite core (Ferrite).

The coil’s form is given by the following equations.

x = ( A*sin(t*N) + B ) * cos(t)
y = ( A*sin(t*N) + B ) * sin(t)
z = A*cos(t*N)
A: The radius of the coil.
B: The distance from the center of the toroid to the center of the coil
N: The number of turns of the coil
t: Angle

Body Attributes and Materials

Body Number/Type	Body Attribute Name	Material Name
0/Solid	Ferrite	Ferrite
5/Solid	Cur	008_Cu

* Available from the Material DB

Material Name	Tab	Settings
Ferrite	Permeability	Relative Permeability: 1×10^3

Boundary Conditions

No setting.

Results

To see the calculation results of electromagnetic force and inductance, go to the [Results] tab

click [Table] .

The vectors of the magnetic flux density are shown below.

The vectors of the magnetic field are shown below.

See other Magnetic Analysis examples.