VORRICHTUNG ZUR KORREKTUR DES PENDELNS BEI HYSTERESE-SYNCHRONMOTOREN

VORRICHTUNG ZUR KORREKTUR DES PENDELNS BEI HYSTERESE-SYNCHRONMOTOREN

A method and apparatus for accurately controlling a hysteresis synchronous motor velocity eliminate low frequency hunting, which is characteristic of the motor. A nominal input phase current is modified by providing feedback information, thereby enabling a microprocessor control system to modify the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CARL, JAMES, A., LITTLETON, MA 01460, US, CONNOLLY, JOHN, L., III, NEWTON, NH 03858, US, BOSTON, W., THOMAS, NORTH ANDOVER, MA 01845, US
Format: Patent
Sprache:ger
Schlagworte:
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:A method and apparatus for accurately controlling a hysteresis synchronous motor velocity eliminate low frequency hunting, which is characteristic of the motor. A nominal input phase current is modified by providing feedback information, thereby enabling a microprocessor control system to modify the phase of quadrature input current signal to the motor and thereby eliminating hunting of the motor. Accordingly, in a high resolution scanning application, speed variations which could cause disturbing artifacts to appear in an output image are eliminated. Velocity control, better than 15 parts per million, can be achieved