Commutatorless d.c. motor with electronic commutation

Details Commutatorless d.c. motor with electronic commutation Commutatorless d.c. motor with electronic commutation

1984-04-10

1986-02-04

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 310 68R, 310268, H02K 2902, H02K 122

Patent

active

045688621

ABSTRACT:
A d.c. motor has a disc-shaped rotor carrying permanent magnets having their magnetic axes parallel to the motor shaft and on both sides of the rotor fixed armatures, each armature comprising a rosette-shaped, flat lap armature winding in which the coils partially overlap each other, a slotless iron ring having a flat face to which the coils are fixed, and a connection ring divided into insulated segments receiving the ends of the coils adapted to be energized separately by means of an electronic commutation circuit controlled by a rotary encoder, the groups of segments to which the ends of the coils which are to be energized in parallel are connected, being interconnected by conducting wires extending along the ring. All the component elements of the armature are embedded in plastic material and constitute a compact assembly. If desired, the winding may be of the wave winding type.

REFERENCES:
patent: 4088908 (1978-05-01), Gumen et al.
patent: 4361776 (1982-11-01), Hayashi et al.
patent: 4484097 (1984-11-01), Kanayama et al.

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