Magnetic Field of Transformerexamples|products|Murata Software Co., Ltd.

Example14 Magnetic Field of Transformer

General

  • Two coils united by loop magnetic core are solved.
     

  • The coupling coefficient, 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.
     

 

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

Model

Bodies of two loop coils (Coil1, Coil2) and magnetic core are defined.

The body attributes are set so that the currents of two loop coils flow in the opposite direction each other.

 

Body Attributes and Materials

Body Number/Type

Body Attribute Name

Material Name

1/Solid

Coil2

008_Cu *

3/Solid

Coil1

008_Cu *

4/Solid

Core

Core

* Available from the Material DB

 

The material properties are set up as follows:

Material Name

Tab

Properties

core

Permeability

Relative Permeability 5×10^3

 

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

Body Attribute Name

Tab

Settings

Coil1

Current

Waveform: Constant

Current: 1[A]

Turns: 100[Turns]

Direction: Loop Coil/Magnetic Field Direction:

Magnetic Field Vector: X=0, Y=0, Z=1

Coil2

Current

Waveform: Constant

Current: 1[A]

Turns: 100[Turns]

Direction: Loop Coil/Magnetic Field Direction:

Magnetic Field Vector: X=0, Y=0, Z=-1

Boundary Conditions

No setting.

Results

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

 

 

 click [Table] .

 

The inductances of the loop coils are output as follows.

 

 

The coupling coefficient is output as follows.

 

 

The vectors of the magnetic field are shown below.

 

The vectors of the magnetic flux density are shown below.

The flux density is looping through the iron core.

 

The vectors of the current density are shown below.