CHOPPER DEVICE

PURPOSE:To obtain a chopper device, in which a thyristor is ignited by the generation of overvoltage and arc-extinguished quickly and the restart of load is enabled rapidly. CONSTITUTION:The thyristor 6 of an overvoltage control circuit 7 is ignited, a line breaker 2 is broken, and the GTO 9a of the...

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Bibliographische Detailangaben
1. Verfasser:	NAKAMOTO NORIAKI
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 THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a chopper device, in which a thyristor is ignited by the generation of overvoltage and arc-extinguished quickly and the restart of load is enabled rapidly. CONSTITUTION:The thyristor 6 of an overvoltage control circuit 7 is ignited, a line breaker 2 is broken, and the GTO 9a of the negative-electrode side element group 9 of a reversible chopper circuit 10 is ignited. Accordingly, currents intending to flow from an induction motor 14 into the thyristor 6 are bypassed by the GTO 9a, and the currents of the thyristor 6 are attenuated quickly.