Synchronous motor having gradual edge effect

Details Synchronous motor having gradual edge effect Synchronous motor having gradual edge effect

1981-01-12

1983-05-24

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 49R, 310261, H02K 1900

Patent

active

043852505

ABSTRACT:
A synchronous motor has a gradual edge effect as rotor teeth align with stator teeth by varying the width of the stator teeth. The edges of uniformly spaced rotor teeth of equal width will align with edges of the widest stator teeth before aligning with the edges of the narrower stator teeth. The change in torque associated with edge alignment of the rotor and stator teeth is spread in time and position with less compounding of the changing torque. More uniform torque and smoother, quieter motor operation results.

REFERENCES:
patent: 4112319 (1978-09-01), Field

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