ELECTRIC CAR CONTROLLER

• Main Author: SHIMIZU HIDEYUKI
• Format: Patent
• Language: English
• Published: 19.09.1997
• Edition: 6
• Subjects: 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; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; 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; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To reliably prevent the spread of damage when a failure occurs in a power inverting circuit by installing a protective operation circuit which makes a DC circuit opening means and a motor circuit opening means perform the opening operation when the failure in the power inverting circuit is detected. SOLUTION: A logic control circuit consists of a motor angular velocity operating part 81, a current command value operating part 82, a current polar coordinate converting part 83, a current control part 84, a voltage polar coordinate converting part 85, a PWM voltage operating part 86, a PWM signal generating part 87, an inverter failure detecting part 88, an overvoltage detecting part 89, and a control signal output part 810. A signal Vdc of a DC voltage detector, a signal Idc of a DC current detector, signals Iu, Iw of an AC current detector, a signal θr of an armature angle detector, and a cab command are inputted, and PWM signals (Gu, Gv, Gw) are outputted to an inverter circuit. On the basis of logic operation, a DC circuit opening/closing signal, a motor circuit opening/closing control signal and an overvoltage control operation signal are outputted to a high speed breaker, an electromagnetic contactor and an overvoltage control circuit, respectively.