Originally posted by russ
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Or a chasing sequence Xmas light controller.
You could think of it as the DC equivalent of a VFD.
The "three phase" part would just indicate that there are three winding sets at 120 degree angular displacement.
You could make the motor with two or with 15 depending on what operating characteristics you need.
I think that the direct drive motors in modern front load washing machines work in the same way but with a very large number of poles compared to the number of phases.
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