Patent ID: 6046553
Filing Date: 2000-04-04
Classification: B60L,Y02T

Abstract:
A control device for an electrical vehicle having a battery and a motor driven by the battery, the control device comprising:a power inverting circuit for inverting a direct current power supplied from the battery into an alternating current power to apply the alternating current power to the motor;a motor control circuit for controlling an operation of the power inverting circuit in accordance with a torque command, the motor control circuit having a first calculation control circuit and a second calculation control circuit; anda first and second rotary angle detector operationally connected to the motor, for detecting rotary angles of the motor;wherein the first calculation control circuit calculates a motor electric angle (.theta.m) on the basis of the rotary angle detected by the first rotary angle detector, while the second calculation control circuit calculates a motor electric angle (.theta.s) on the basis of the rotary angle detected by the second rotary angle detector; andwherein the motor control circuit outputs the stop command to interrupt the alternating current power applied to when a difference between the motor electric angle (.theta.m) and motor electric angle (.theta.s) is equal to or more than the predetermined value.