APPARATUS FOR CONTROLLING ELECTRIC CAR

An apparatus for controlling electric car equipped with at least two induction motors (4a-4d) for driving the electric car. The individual motors are connected with variable-voltage variable-frequency inverters (3a-3d) combined with tacho-generators (5a-5d), respectively, to constitute a plurality o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	OKAMATSU, SHIGETOSHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 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 apparatus for controlling electric car equipped with at least two induction motors (4a-4d) for driving the electric car. The individual motors are connected with variable-voltage variable-frequency inverters (3a-3d) combined with tacho-generators (5a-5d), respectively, to constitute a plurality of drive control units (A-D). And the inverters (3a-3d) of the drive control units (A-D) are all controlled by an integral controller (1). This apparatus for controlling a car includes torque reduction control means for reducing the torque of a predetermined one of the induction motors (4a-4d) by a predetermined value from the command value of the corresponding drive control unit. Frequencies of the inverters of the remaining drive control units are controlled based on the frequency of rotational speed obtained from the tacho-generator of the above drive control unit.