Defining the Rotor Data for a PMDC Motor

The rotor is equipped with slots containing copper conductors that are connected to the commutator. The commutator acts as a mechanical rectifier in the motor.

Use the Rotor Data Properties, Rotor Slot Data Properties, and Rotor Winding Data Properties windows to define the rotor slots, windings, and dimensions.

To define general rotor data:

  1. To open the Rotor Data Properties window, double-click the Machine > Rotor entry in the project tree on the desktop. (You can also enter values in the Properties section of the desktop without opening a separate window.)
  2. Enter the stacking factor for the rotor core in the Stacking Factor field.
  3. Enter the Number of Slots in the rotor.
  4. Select the Slot Type:
    1. Click the button for the Slot Type.
      The Select Slot Type window appears.
    2. Select a slot type (available types include 1 through 4).
      3. Note: When you place the mouse cursor over the slot type, a schematic outline of the slot appears.
    3. Click OK to close the Select Slot Type window and return to the Properties window.
  5. Enter the outer diameter of the rotor in the Outer Diameter field.
  6. Enter the inner diameter of the rotor in the Inner Diameter field.
  7. Enter the length of the rotor core in the Length field.
  8. Select a Steel Type for the rotor core:
    1. Click the button for Steel Type.
      The Select Definition window appears.
    2. Select a steel type from the list, or define a new steel type.
    3. Click OK to close the Select Definition window and return to the Properties window.
  9. Enter the skew width, measured in slot number, in the Skew Width field.
  10. Click OK to close the Properties window.