Connection table

Presentation

Table 1. Building the winding architecture – Filling of the connection table


1 Dialog box to define a connection table with expert mode.
2 Field to upload a connection table defined into a *.xlsx file.
3 Box to manually fill a connection table or modify an uploaded one from a *.xlsx file.
4 Dynamic view of the hairpin winding updated in real time as a function of the filling status of the connection table.
5 Selection of the number of layers. The number of layers is limited to 2.
6 Number of conductors per layer (This value must be even).
7 Number of slots per pole and per phase to set. No more than 2 times the number of slots per pole and per phase.
8 Area to customize the view. For each elementary coil set in parallel (A, B, C…):
  • Conductor number or current direction can be plotted.
  • Hairpin and/or back-end connections can be displayed or not according to the selected elementary coils in the dialogue box.

Main rules

Here are the main rules to fill the connection table or to define a *.xlsx equivalent file:
  • Define the number of layers, the number of conductors per layer and the number of slot / pole / phase according to the expected hairpin winding configuration.
  • Each parallel path (also called elementary coil) is characterized by a letter (A, B, C…, AA, AB,…).
  • The parallel path A must begin by 1A+ or 1A-. 1 corresponds to the first conductor number. Each added conductor increments the conductor number by one.
    • “+” or “-“ correspond respectively to the “clockwise” or “counterclockwise” direction of rotation of a parallel path (or part of a parallel path). Only the first conductor of a hairpin (odd number) can define the direction of rotation.
    • The rotation direction is defined when facing the machine on the connection side.

Example

How to define a parallel path composed of 16 conductors in which the first 8 rotate in the clockwise way (conductor 1  8) and the other 8 rotate in the counterclockwise way (conductor 9  16)?

The first conductor of the first 8 conductors must be defined as “1A+” to rotate in the clockwise direction.

Then the first conductor of the last 8 conductors must be defined as “9A-“ to rotate in the counterclockwise direction.

Figure 1. How to define parallel paths in the connection table?