SPEED CONTROLLER FOR INDUCTION MACHINE

PURPOSE:To minimize the input power of an inverter by providing an output voltage correcting circuit. CONSTITUTION:A correcting polarity instructing circuit 40 receives a signal of a discriminator 20 and instructs the polarity of a correcting signal of an output voltage command. The output of the ci...

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Bibliographische Detailangaben
Hauptverfasser:	HORIUCHI HIDEKAZU, KOUNO KIMIO, OKUYAMA TOSHIAKI
Format:	Patent
Sprache:	eng
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 minimize the input power of an inverter by providing an output voltage correcting circuit. CONSTITUTION:A correcting polarity instructing circuit 40 receives a signal of a discriminator 20 and instructs the polarity of a correcting signal of an output voltage command. The output of the circuit 40 turns ON either one of the switch 52 or switch 53 of an output voltage correcting circuit 50. In an ordinary state, the output voltage correcting voltage is applied to an output voltage controller 7 so that the inverter input current is minimized by alternately turning ON and OFF the switches 52, 53.