Inductance of Helical Coilexamples|products|Murata Software Co., Ltd.

Example8 Inductance of Helical Coil

General

  • The inductance of a helical coil is solved.
     

  • The vectors of the magnetic field and the magnetic flux density are also solved.
     

  • Unless specified in the list below, the default conditions will be applied.
     

 

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: 2[mm]

Model

A helical solid body Coil (coil) is defined.

  • Instead of creating the helical shape, a model with specified number of turns (bulk coil) will be effective for the coil with high number of turns (100s, 1000s)
    See [Exercise 10: Inductance of Helical Coil (The Number of Turns Specified] for more details.

Body Attributes and Materials

Body Number/Type

Body Attribute Name

Material Name

0/Solid

Coil

008_Cu *

* Available from the Material DB

 

Body attribute is set up as follows to apply current to the coil.

Body Attribute Name

Tab

Settings

Coil

Current

Waveform: Constant

Current: 1[A]

Turns: 1[Turns]

Direction: Specify Inflow/Outflow Faces (In the Air Box):

Select inflow face and outflow face.

Boundary Conditions

No setting.

Results

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

 

 

 click [Table] .

 

 

 

 

The vectors of the magnetic flux density are shown below.

 

The vectors of the magnetic field on ZX plane are shown below.

The magnetic field inside coil is directing the Z- direction.

 

The vectors of the current density are shown below.

The current is flowing as set for the coil.