REGENERATIVE-BRAKING OPERATING CIRCUIT FOR ALTERNATING CURRENT ELECTRIC MOTOR COACH

• Main Authors: KINOSHITA SHIGENORI, MOROHOSHI YUKINOBU, SHIRAI KIICHIROU
• Format: Patent
• Language: English
• Published: 21.02.1984
• Subjects: 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

PURPOSE:To decrease the number of apparatus for the titled operation such as a resistance chopper by dividing a plurality of driving motors into two groups, connecting each group of armature groups to regenerative resistors and connecting each group of field winding groups in parallel with a semiconductor converter for a magnetic field system. CONSTITUTION:A plurality of the driving motors are divided into two groups, the regenerative braking resistor 17 is connected to the armature group 3 of the motor group of the first group, and the regenerative braking resistor 20 is connected to the armature group 5 of the motor group of the second group. The field winding group 4 of the first motor group and the field winding group 6 of the second motor group are connected in parallel with the common semiconductor converter 21 for the magnetic field system. Accordingly, a chopper exclusive for regenerative operation can be omitted, and stepless field-weakening control is also enabled.