| 摘要 |
<p>An apparatus for controlling a motor for an electric vehicle and a method for reducing torque ripple using the same are provided. Since a field current flowing in a field coil of a rotor is controlled by generating a negative phase ripple current with respect to torque ripple according to each position of a rotor of a motor, torque ripple of the motor can be reduced without degrading output torque. In addition, in an operation region of a high torque section, torque ripple is reduced by controlling a field current by increasing an AC component of a negative phase ripple current, and in an operation region of a low torque section, torque ripple is reduced by controlling a field current by decreasing an AC component of a negative phase ripple current. Namely, torque ripple of a motor can be reduced by controlling only a field current without controlling a phase of an output current applied to an armature coil of a stator.</p> |
