Electric vehicle having independent traction motor units

摘要

An electric vehicle to automatically adjust output torque during travelling even when there is a difference in the output characteristic between two traction motor units that independently drive left and right drive wheels. The electric vehicle includes the motor units; a torque command unit that outputs torque command values to the motor units; a torque difference occurrence determiner that determines that a difference has occurred between actual driving forces TL, TR of the respective drive wheels even when the torque command unit applies the same torque command values TL*, TR* to the motor units; and a driving force difference reducer that, if the determiner determines that a driving force difference not less than a set value has occurred between the drive wheels, causes control of reducing the driving force difference to be performed during travelling.

主权项

1. A four-wheel or three-wheel electric vehicle comprising:
two traction motor units configured to independently drive left and right drive wheels, respectively; a torque command unit configured to output torque command values for driving the two traction motor units, respectively; a motor driver configured to drive the respective traction motor units in accordance with the torque command values provided by the torque command unit; a torque difference occurrence determiner configured to determine that a difference has occurred between actual driving forces of the respective left and right drive wheels even when the torque command unit applies the same torque command values to the two traction motor units; and a driving force difference reducer configured to, if the torque difference occurrence determiner determines that a driving force difference equal to or greater than a set value has occurred between the left and right drive wheels, cause control of reducing the driving force difference to be performed during travelling of the vehicle.