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# Example32Magnetic 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.

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].

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