Multiple-pole stepping motor

Details Multiple-pole stepping motor Multiple-pole stepping motor

1985-02-11

1987-01-20

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

318696, H02K 3700

Patent

active

046381953

ABSTRACT:
A multiple-pole stepping motor includes M stator windings distributed on M/2 groups and coacting with a permanent magnet rotor for hybrid stepper and a soft iron rotor for a variable reluctant stepper. The two stator windings in each group are connected in series with different winding polarity. The uniform pole angle 360.degree./M is to facilitate the winding process. The angles .alpha. and .alpha.' are pitches between adjacent teeth of adjacent poles in the group, the angles .beta. and .beta.' are pitches between adjacent teeth on adjacent groups, having a relationship with step angle t: ##EQU1## In this relation m, n, m' and n' are integer greater than zero.

REFERENCES:
patent: 3510699 (1970-05-01), Frederickson
patent: 3601640 (1971-08-01), Egawa
patent: 3751696 (1973-08-01), Morreale
patent: 3866104 (1975-02-01), Heine
patent: 4095161 (1978-06-01), Heine et al.
patent: 4112319 (1978-09-01), Field
patent: 4385247 (1983-05-01), Satomi

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