SPEED CONTROL DEVICE FOR INDUCTION MOTOR

PROBLEM TO BE SOLVED: To provide a speed control device for an induction motor which is made compact and at a low cost. SOLUTION: In the speed control device which connects a self-extinguish element 4 via a DC reactor 15 between output terminals of a converter 3, which is connected to the secondary...

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Bibliographische Detailangaben
Hauptverfasser:	AKITA YOSHITOSHI, OKUYAMA TOSHIAKI, OO NORIO, NEMOTO JIRO
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:	PROBLEM TO BE SOLVED: To provide a speed control device for an induction motor which is made compact and at a low cost. SOLUTION: In the speed control device which connects a self-extinguish element 4 via a DC reactor 15 between output terminals of a converter 3, which is connected to the secondary side of the induction motor 2 and on-off controls the self-extinguish element 4 so as to control the output voltage of the converter 3, and a capacitor 16 is connected in parallel with the serial circuit of the self-extinguish element 4 and the DC reactor 15.