Electricity: motive power systems – Motor-reversing – Armature or primary circuit control
Patent
1975-02-10
1976-06-29
Rubinson, Gene Z.
Electricity: motive power systems
Motor-reversing
Armature or primary circuit control
318225R, 62184, 62186, H02P 540
Patent
active
039671720
ABSTRACT:
A control circuit for varying the speed of a dynamoelectric machine having a plurality of windings selectively energizable in different configurations for operation of the dynamoelectric machine at different speeds from an alternating current source. The control circuit has a phase control circuit for providing signals having a controllable phase relation to the alternating current source. A gate controlled full wave alternating current switch is connected in parallel with one of the windings, and the parallel combination of the one winding and the switch is connected in series with at least another of the windings whereby the switch conducts generally the full alternating current source voltage applied to the other winding. Means couples the phase control circuit to the gate of the switch to control the start of the conduction of the switch.
A control circuit in a refrigeration system and a method of controlling speed of a dynamoelectric machine are also disclosed.
REFERENCES:
patent: 3415071 (1968-12-01), Kompelien
patent: 3568019 (1971-03-01), Hirokawa et al.
patent: 3613391 (1971-10-01), Harter
patent: 3792324 (1974-02-01), Suarez et al.
General Electric Company
Papin Joseph E.
Rubinson Gene Z.
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