Electricity: motive power systems – Motor-reversing – Armature or primary circuit control
Patent
1975-01-17
1976-07-13
Rubinson, Gene Z.
Electricity: motive power systems
Motor-reversing
Armature or primary circuit control
318206R, 318227, 318257, 318282, H02P 140
Patent
active
039696588
ABSTRACT:
A motor system and method of operation is disclosed which provides an electronically controlled motor operable from a single phase, AC power source, having adjustable unidirectional and reversing capabilities. The system includes a motor having a stator assembly and a rotor assembly. The stator assembly includes a core of stacked laminations constructed from magnetic material and a two phase winding constructed from a plurality of wire turns arranged in coils. The winding is placed in the stator assembly so that each edge of the individual coils, that is to say, the portion of the coil that extends longitudinally of the stator assembly, occupies a single slot of the stator core. The system also includes a rectifier circuit having novel means for providing signal source voltage, a silicon controlled rectifier (SCR) circuit exhibiting an improved method of providing current rate of change protection to the individual SCR devices, and a position sensing and motor reversal circuit which includes adjustable elements capable of varying the speed torque characteristic of the motor.
REFERENCES:
patent: 3334284 (1967-08-01), Radtke
patent: 3368381 (1968-02-01), Crane et al.
patent: 3428880 (1969-02-01), Muller
patent: 3543118 (1970-11-01), Koenig
Emerson Electric Co.
Rubinson Gene Z.
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