ELECTRIC MOTOR CAR CONTROL APPARATUS

An electric vehicle controller includes speed sensorless vector control means (11) for estimating the rotating speed of an AC motor (7) from an output voltage command and an output current from a VVVF inverter (6) and controlling the VVVF inverter (6) based on the estimate, overhead wire current det...

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Bibliographische Detailangaben
Hauptverfasser:	NEGORO, HIDETO, KONO, MASAKI
Format:	Patent
Sprache:	eng ; fre ; ger
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 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:	An electric vehicle controller includes speed sensorless vector control means (11) for estimating the rotating speed of an AC motor (7) from an output voltage command and an output current from a VVVF inverter (6) and controlling the VVVF inverter (6) based on the estimate, overhead wire current detection means (4) for detecting the current flowing through an overhead wire (1), wrong action sensing means (12) for sensing abnormality in the speed sensorless vector control means (11) from the sign of the current flowing through the overhead wire (1) and detected by the overhead wire current detection means (4) when the VVVF inverter (6) is in operation, and gate stop means (13) for stopping the VVVF inverter when the wrong action sensing means (12) senses abnormality.