Low inertia high torque variable reluctance motor

Details Low inertia high torque variable reluctance motor Low inertia high torque variable reluctance motor

1982-08-27

1984-10-02

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310162, 310190, H02K 3700

Patent

active

044750510

ABSTRACT:
A high performance, low cost variable reluctance stepper motor has an integral structure with a ring and a plurality of aligned salient pole members. A plurality of teeth are located on the face of each pole member. Windings are disposed on alternate ones of the pole members and a high impedance means isolates the pole members from one another. A rotor with a plurality of teeth and a plurality of holes disposed thereon coacts with the pole members and is moved in a step fashion by the sequential energization of the windings. The flux generated by the energization of the windings is confined to a short path and coupling to the remainder of the structure is negligible. Recesses positioned symmetrically around the structure also serve to enhance flux splitting and reduce adjacent flux coupling.

REFERENCES:
patent: 3344325 (1967-09-01), Sklaroff
patent: 3465225 (1969-09-01), O'Regan et al.
patent: 3875437 (1975-04-01), Hara et al.
patent: 3984711 (1976-10-01), Kordik
patent: 4288709 (1981-09-01), Matthias et al.
Madsen, "Stepper Motors Convert Pulses to Accurate Mechanized Steps", 4/80, pp. 205-209.
Kozuchowski, "Stepping Motors", 5/79, pp. I-VIII.

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