CONTROL DEVICE OF ELECTRIC AUTOMOBILE

摘要

PURPOSE:To make the efficiency of a motor of the electric automobile to be favorable by a method wherein the output torque of the motor is controlled by an armature current and a field current generating the least loss responding to the operated quantity of an accelerator pedal. CONSTITUTION:A command device 3 generates an output torque command taumc of the motor according to a signal thetae outputted from an accelerator 2 responding to the operated quantity of the accelerator pedal 1. A pattern generator 4 calculates the values of the armature current and field current of the least loss to generate the output torque command taumc, and supplies an armature current command value imc and a field current command value ifc to an armature control circuit 7 and a field control circuit 8. By this way, because the motor output torque can be controlled responding to the operated quantity of the accelelator pedal 1 and the motor can be operated with the least armature current and field current so that the efficiency can be elevated.