Brush

Overview

Two options are available in the commutator-brush definition mode:
  • Auto: Brushes dimensions and angular position are automatically calculated by FluxMotor to get the best fit with the defined winding (see below).
  • User: Brushes dimensions and angular position are defined by the user.
Table 1. Commutator - Brush - Overview


1 Selection of the Rotor subset: Commutator panel (Click on the icon Commutator).
2 Brush design tab to introduce brush related parameters.
3 Auto mode: Brushes dimensions and angular position are automatically calculated by FluxMotor to get the best fit with the defined winding.
4 Brushes dimensions and angular position are defined by the user.
4.1 Commutator-brush input data to be defined. This is only available in user mode (1).

(1) Here is the list and the description of the commutator brush parameters:

Table 2. Commutator brush parameters
Label Tooltip, note Default value (auto mode)
Nº of brushes Number of brushes. Only unblocked for wave winding Number of poles
Angular position Angular position of the reference brush (polarity +) Center of a north pole (for lap winding)

Center of a south pole (for wave winding)

Pitch angle Pitch angle of a brush 0.85 times the segment commutator pitch for simplex winding (1.85 for duplex and 2.85 for triplex)

Illustrations of these parameters are shown below.

Figure 1. Commutator – Brush definition mode: Auto


Figure 2. Commutator – Brush definition mode: User


Table 3. The angular position is illustrated in the visualization


1 Selecting a parameter highlights it.
2 Selecting a parameter label displays the corresponding angle on the picture.
3 Selecting a parameter displays the corresponding tooltip which provides additional information
Table 4. The pitch angle is illustrated in the visualization


1 Selecting a parameter highlights it.
2 Selecting a parameter label displays the corresponding angle on the picture.
3 Selecting a parameter displays the corresponding tooltip which provides additional information