Design

Bar topology

Choosing a new bar topology is possible by clicking on the "Bar shape" button. See the section “Choose part” for additional information. This opens a dialog box, allowing access to the bar libraries.

It allows visualizing, comparing, choosing, and importing another slot topology to modify in the current machine design.

Table 1. How to choose another bar topology?


1 Bar shape button allows access to the bar libraries to change the bar topology.
2 Dialog box to visualize and to select the topologies of bars from the bar part libraries.

Inputs / Outputs

Specific inputs and outputs are considered for each pole topology.
Note: The relevance of input parameter values can be evaluated by using the “Part Factory” application.
Important: The design of the squirrel cage bars (position and dimensions) is done in the part “Bar”.
Important: The design of the bars (position and dimensions) is done in the framework of the part “Bar” (on the top part of the rotor sector for an inner rotor machine and on the bottom part of the rotor sector for an outer rotor machine).
Table 2. Managing inputs/Outputs parameters of a part topology (case of an inner bar)


1 User input parameter fields to enter the value.
2 Selecting a parameter highlights it.
2.1 Selecting a parameter displays the corresponding tooltip, which completes information about the parameter.
2.2 Select a parameter label that displays the corresponding arrow on the picture.
3 Output parameters (read only data) to complete the description of the topology.
Note: The name of the part and its original library are mentioned in this section.

Bar physical properties

  1. List of possible elementary regions for slots

    Here is an example of regions in the inner bar. Note that the same principles apply to the outer bar.

    Table 3. Regions for inner bar


    1 Yoke
    2 Tooth
    3 Tooth foot
    4 Solid conductor for describing the squirrel cage
    Here is the list of possible elementary regions for a bar:
    • Solid conductor, Tooth, Yoke and Tooth foot illustrated above.
    • Ferromagnetic wedge

    • Mechanical device to represent rivet for example

    • Fluid area
    • Hole or Slit
    • Cooling hole
  2. Faces and regions of bars

    This section contains a description of all the faces and regions defined and used in the bar model.

    Each face is defined by a location point. The coordinates of these points are defined in a general coordinate system.

    The point must be within the corresponding face for all the values of user input parameters. Each face has a label and a nature. The nature of faces defines the corresponding regions.

    The physical properties of regions are linked to the materials that can be used to build them. The table below gives the physical properties of bars.

    Figure 1. Physical properties of bar regions and associated materials


    Note: When the regions are grouped (see group of regions above), the same material is associated with all the regions grouped.
    Note: The possible materials associated with the regions shown above can help users to see the meaning of elementary regions.