Lg Electronics Inc.

Youngboong Kim

Junghwan Kim

Junyoung Lim

Seungdo Han

Yunho Kim

Hojun Nam

Junbo Yun

Heeseok Jeong

Hokyoung Lim

Suyoung Yun

An apparatus controlling an electric vehicle motor and a method to reduce torque ripple using the same are provided. A field current flowing in a rotor field coil is controlled by generating a negative phase ripple current with respect to torque ripple according to each position of the rotor, allowing torque ripple of the motor to be reduced without degrading output torque. Additionally, 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. That is, torque ripple of a motor can be reduced by controlling only a field current.

Apparatus for controlling motor for electric vehicle and method for reducing torque ripple using the same

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Seoul, South Korea

Youngboong Kim