Patent ID: 6028403
Filing Date: 2000-02-22
Classification: B60L,Y02T

Abstract:
A vehicle control apparatus for a vehicle which is driven using first and second separately excited DC motors, comprising:a battery;a first field current control circuit section connected between both ends of said battery and having a plurality of field chopper elements connected to the field winding of a first motor and a first field current detector connected in series to the field winding of the first motor;a second field current control circuit section connected between both ends of said battery and having a plurality of field chopper elements connected to the field winding of a second motor and a second field current detector connected in series to the field winding of the second motor;an armature current control circuit section connected between both ends of said battery having an armature for the first motor, an armature for the second motor, an armature current detector, a first armature chopper element for controlling the drive of the motors which is common to the first and second motors and a second armature chopper element for controlling regenerative braking which is connected in parallel to the series circuit consisting of the armature of the first motor the armature of the second motor and the armature current detector; anda drive circuit for controlling currents flowing in the field windings and armatures for the first and second motors by controlling the on/off operation of the respective field chopper elements of the first and second field current control circuit sections and the first armature chopper element on the basis of the detection signals inputted from said armature current detector and said first and second field current detectors, said drive circuit controlling the on/off operation of the second armature chopper element at the time of the regenerative braking to control a current flowing in the armatures of the first and second motors.