Magnetic Field of Three-Phase ACexamples|products|Murata Software Co., Ltd.

Example32 Magnetic Field of Three-Phase AC

General

  • AC current flows in 3 paired conductors.
     

  • The magnetic field vectors and the conductors’ impedances 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

Harmonic analysis

Options

N/A

The frequency of the current is set to 10[kHz].

Tab

Setting Item

Settings

Mesh Tab

Frequency-Dependent Meshing

Reference frequency: 10×10^3[Hz]

Harmonic analysis

Sweep Type

Single frequency

Frequency

10×10^3[Hz]

 

Set the Mesh Tab as follows.

Tab

Setting Item

Settings

Mesh Tab

Meshing Setup

Automatically set the general mesh size: Deselect

General mesh size: 2[mm]

Model

Conductors (Coil_u, Coil_v and Coil_w) are defined.

U, V, and W are phased at 0, -120, and +120 [deg] respectively.

Body Attributes and Materials

Body Number/Type

Body Attribute Name

Material Name

1/Solid

Coil_u

008_Cu *

2/Solid

Coil_v

008_Cu *

3/Solid

Coil_w

008_Cu *

* Available from the Material DB

 

Body attribute is set up as follows to apply currents to each of the three coils.

U, V, and W are phased at 0, -120, and +120 [deg] respectively.

Body Attribute Name

Tab

Settings

Coil_u

Current

Waveform: AC

Current: 1[A]

Phase: 0[deg]

Turns: 1[Turns]

Direction: Specify Inflow/Outflow Faces

Select inflow face and outflow face.

Coil_v

Current

Waveform: AC

Current: 1[A]

Phase: -120[deg]

Turns: 1[Turns]

Direction: Specify Inflow/Outflow Faces

Select inflow face and outflow face.

Coil_w

Current

Waveform: AC

Current: 1[A]

Phase: 120[deg]

Turns: 1[Turns]

Direction: Specify Inflow/Outflow Faces

Select inflow face and outflow face.

Boundary Conditions

No setting.

Results

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

 

 

 click [Table] .

 

The inductance is as follows.

 

Shown below is the vectors of the magnetic field at Phase=0[deg].

 

Shown below is the vectors of the magnetic field at Phase=120[deg].

 

Shown below is the vectors of the magnetic field at Phase=240[deg].

 

Shown below is the vectors of the current density at Phase=0[deg].