Leistung nach Wunsch mit geregelten Drehzahlen
Mit Drehzahlreglern und Drehzahlregelgeräten lässt sich die Drehzahl vieler Geräte auf das gewünschte Niveau einstellen. Besonders einfach ist dies bei Drehstrommotoren, wo Frequenzumrichter über den Strom die Drehzahl steuern und auf Energieverbrauch und andere Faktoren optimieren. Bei Wechselstromantrieben arbeiten Drehzahlregler mit der sogenannten Phasenanschnittregelung. Das ermöglicht, die aktuelle Drehzahl des Motors zu ermitteln und in einem weiten Bereich zu regeln.
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