Slot

Slot conduction mode

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.

Two ways are proposed to define the slot conduction: an automatic and a user one.

Table 1. Slot conduction mode – Ways for defining the slot conduction


1 Auto mode: This mode allows us to set the slot conduction automatically by internal process.
2 User mode: This mode allows us to set the slot conduction manually.

User mode

The user mode allows to set the user slot conductivities manually.

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).