Summary

SlotShapeBase Base class for slot shapes.

Like it’s cousin WindingLayoutBase, a SlotShapeBase class is intended to maximize reusability of custom code. Say you want to implement a slot with a rectangular slot wedge, and fully non-rounded slot-bottom corners, and you want to use the same shape with two different StatorBase stator templates. With a SlotShapeBase subclass, you can.

The intended functionality is as follows. The SlotShapeBase object class creates all the Surfaces associated with the slot: typically the slot-opening (and wedge if any) and the winding layer(s). Furthermore, it creates the Material and Domain objects required for the slot opening. All of the above is added to the parent geometry (e.g. Stator).

The parent geometry is then only responsible for handling everything outside the slot. To handle the airgap-facing part of the slot opening, the class contains the property airgap_surface_curves and the methods first_airgap_point and last_airgap_point , assuming counter-clockwise orientation in everything.

Typically then, a Surface would be created for the stator core. And, as the slot and the core share a part of the airgap boundary, the reduce method of the core Surface would then be called to remove the slot surfaces of the core.

NOTE: It is assumed that no Domains are created for the winding Surfaces . By contrast, these are listed in the winding_window_surfaces property. Normally, the SlotShapeBase object would then by passed on to a WindingLayoutBase class, to handle everything that goes on inside the winding window(s).

NOTE: For now, slot shapes generally work for stators only.

PROPERTIES

• airgap_surface_curves - curves on the airgap surface, oriented ccw

• SlotShapeBase/interlayer_curves is a property.

• SlotShapeBase/liner_curves is a property.

• SlotShapeBase/parent_geometry is a property.

• SlotShapeBase/winding_window_area is a property.

• SlotShapeBase/winding_window_surfaces is a property.

Methods

Class methods are listed below. Inherited methods are not included.

* SlotShapeBase Base class for slot shapes.

Like it’s cousin WindingLayoutBase, a SlotShapeBase class is intended to maximize reusability of custom code. Say you want to implement a slot with a rectangular slot wedge, and fully non-rounded slot-bottom corners, and you want to use the same shape with two different StatorBase stator templates. With a SlotShapeBase subclass, you can.

The intended functionality is as follows. The SlotShapeBase object class creates all the Surfaces associated with the slot: typically the slot-opening (and wedge if any) and the winding layer(s). Furthermore, it creates the Material and Domain objects required for the slot opening. All of the above is added to the parent geometry (e.g. Stator).

The parent geometry is then only responsible for handling everything outside the slot. To handle the airgap-facing part of the slot opening, the class contains the property airgap_surface_curves and the methods first_airgap_point and last_airgap_point , assuming counter-clockwise orientation in everything.

Typically then, a Surface would be created for the stator core. And, as the slot and the core share a part of the airgap boundary, the reduce method of the core Surface would then be called to remove the slot surfaces of the core.

NOTE: It is assumed that no Domains are created for the winding Surfaces . By contrast, these are listed in the winding_window_surfaces property. Normally, the SlotShapeBase object would then by passed on to a WindingLayoutBase class, to handle everything that goes on inside the winding window(s).

NOTE: For now, slot shapes generally work for stators only.

* SlotShapeBase/create_geometry is a function.

* SlotShapeBase/first_airgap_point is a function.

P = first_airgap_point(this)

* initialize Parse characteristic lengths and initialize

dimensions.

* SlotShapeBase/last_airgap_point is a function.

P = last_airgap_point(this)

* orientation_angle Angle of principal-like axis of this.surfaces.

Typically: angular coordinate of first slot of parent geometry.

* determining lines

* SlotShapeBase/set_parent is a function.

set_parent(this, parent)

* free_height_of_surface Free height of surface.

h = free_height_of_surface(this, k_surface)