Creating a Stator Yoke to Match Stator Poles of Stepper Motors

The figure below shows an example for a variable reluctance stepper motor in which the stator poles are mounted to a square yoke with YokeType= 2 and BoreType= 1, where BoreFillet is set as WidthBody in StepMCore UDP to fit the pole bottom.

The figure below shows a stepper motor in which the stator poles are mounted to a square yoke with YokeType= 4 and octagon BoreType= 3 in which the coil area is that of circular bore type (BoreType= 1) as shown in the previous figure.

For bore type (BoreType= 3), the coil area can be larger. To do this, you can set a negative value for StepMCore UDP parameter CoilEndExt to create the coils. The modified coils are shown below.

Coil area modified by setting StepMCore UDP parameter CoilEndExt < 0.