CONTROL DEVICE OF ELECTRIC VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a control device of an electric vehicle capable of quickly and sufficiently warming an oil temperature at a low temperature without increasing an installation space in a vehicle.SOLUTION: A motor control section 29 in a control device of an electric vehicle performs torque control of a motor 6 by vector control in accordance with a torque command map for determining a relation between a torque command to be an acceleration/deceleration command and a current command of the motor 6. The motor control section includes motor temperature detection means Sc for detecting a temperature of the motor 6, oil temperature detection means Sd for detecting a temperature of oil cooling the motor 6, and a torque command map automatic switching section 34 for switching the torque command map in accordance with a determined rule by the temperatures detected by the detection means. The torque command map switched by the torque command map automatic switching section 34 is made a map in which d-axis current in the vector control is increased as either or both of the temperature of the motor 6 and the temperature of oil are lower.SELECTED DRAWING: Figure 3