CONTROLLER AND CONTROL METHOD FOR VARIABLE SPEED DRIVE SYSTEM

PURPOSE:To prevent saturation of flux in a transformer being employed at the output of a square wave inverter. CONSTITUTION:When the output from a speed commander 11 enters into a speed range set at a flux saturation rate command detector 27, a switch 31 functions to deliver a frequency command f0*...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	OKAMATSU SHIGETOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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