Direction reversing direct current motors and their control

Details Direction reversing direct current motors and their control Direction reversing direct current motors and their control

1975-11-10

1978-06-13

Rubinson, Gene Z.

Electricity: motive power systems

Motor structure adjustment or control

Brush or other current-collector control

310230, 318491, 318292, H02P 300

Patent

active

040951553

ABSTRACT:
A direct current motor which includes a stator for producing a fixed magnetic field and a plurality of armature windings. The motor is caused to rotate by applying current to each winding only while that winding is passing through a zone in a given orientation relative to the stator field. The direction of rotation is changed without changing the direction of the current applied to the windings, by changing the orientation of the zone relative to the stator field, to reverse the direction of the rotational force applied to the armature. Because the current does not reverse through the armature windings, the control circuit can be simple and in a preferred embodiment includes only two gate-turn-off silicon controlled rectifiers, a switch, and a resistor.

REFERENCES:
patent: 1990767 (1935-02-01), Whitsitt et al.
patent: 3536974 (1968-02-01), Beigl et al.
Electric Machinery, Fitzgerald et al., Section 4-3, "Commutator Action," pp. 192-194.

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