Schaltungsanordnung zum Betreiben eines Mehrphasen-Synchronmotors an einem Gleichspannungsnetz

PURPOSE: To achieve a low noise smooth starting process by reducing noise of a rectifier through a few circuit technology arrangement. CONSTITUTION: Analog difference forming units 18-20 are connected, respectively, with semiconductor switches 14-16 on the control input side G and introduced, on one...

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Bibliographische Detailangaben
Hauptverfasser:	WEHBERG, JOSEF, ALBRECHT, JOERG
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:	PURPOSE: To achieve a low noise smooth starting process by reducing noise of a rectifier through a few circuit technology arrangement. CONSTITUTION: Analog difference forming units 18-20 are connected, respectively, with semiconductor switches 14-16 on the control input side G and introduced, on one hand, with switching signals belonging to the semiconductor switches 14-16 and, on the other hand, with a reference signal derived from a motor current. A trouble amount application circuit 40 acts on the switching signal to decrease the amplitude depending on the r.p.m. in order to limit the motor current.