Slot thermal model - Inputs

Slot thermal model - Inputs

The thermal exchanges from the conductors to the stator core are complex phenomena for which FluxMotor embeds a dedicated model.

This panel allows choosing the conduction model from the conductors to the stator core.

By default, a FluxMotor model is proposed. This model uses the slot fill factor, the conductor shape, and the conductivities of the materials inside the slot, to compute two equivalent conductivities:

  • The radial and orthoradial conductivity of the winding, used to compute thermal exchanges from the winding to the stator core.

  • The axial conductivity of the winding used to compute thermal exchanges from the in-slot winding to the end windings.
Internal cooling – slot model design area
1 Display the axial and radial view of the machine.
2 Display the internal cooling datasheet, showing the thermal parameters defining the internal heat exchanges.
3 Radial view of the motor, where specific exchange areas can be highlighted depending of the selected input.
4 Axial view of the motor, where specific exchange areas can be highlighted depending of the selected input.
5 The section “Slot model” is selected.
6 Button to set the slot conductivities automatically by internal process.
7 Selected button, to set the user slot conductivities.
8

Equivalent conductivities, to be set only when the User mode has been chosen. In user mode, the following inputs must be set:

  • The radial and orthoradial conductivity of the winding, used to compute thermal exchanges from the winding to the stator core. The default value is 1.5 W/ (K.m).
  • The axial conductivity of the winding used to compute thermal exchanges from the in-slot winding to the end windings. The default value is 200 W/ (K.m)
9 Button to restore default input values.
10 Button to apply inputs. Pressing the enter key twice applies inputs too.
11 Icon to export internal cooling data into *.txt or *.xls files.