Direct current motor

Details Direct current motor Direct current motor

1981-11-12

1984-05-08

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310268, H02K 2126

Patent

active

044477511

ABSTRACT:
A direct current motor comprises a field magnet having 2 mn magnetic poles magnetized with the same angular intervals as those of the magnetic poles N and S, where m is an integer of 1 or more, and n is an integer of 4 or more, a magnetic member for closing the magnetic circuit of the magnetic poles of the field magnet, an armature in which m(2n.+-.n) armature coils are arranged each magnetically with a phase angle of 360/(2n.+-.2) degrees, the armature being directed towards the magnetic poles in the magnetic circuit, electric power supply control means for performing the switching of an armature current mn(2n.+-.2) times per revolution of the armature with respect to the field magnet, and a rotating shaft for rotatably supporting the armature or the field magnet, the rotating shaft being supported by a bearing disposed in an outer casing of the direct current motor. In arrangement in which the armature coils correspond to the magnetic poles, the terminal of an armature coil which has a closest relationship to its corresponding magnetic pole with respect to a relationship of any desired armature coil to its corresponding magnetic pole, and the terminal of that desired armature coil are connected together to the electric power supply control means so that the armature coils are wound in the same direction.

REFERENCES:
patent: 4243902 (1981-01-01), Ban
patent: 4283644 (1981-08-01), Kondo et al.
patent: 4315177 (1982-02-01), Ban
patent: 4315178 (1982-02-01), Ban
patent: 4369388 (1983-01-01), Ban
patent: 4390805 (1983-06-01), Hahn

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