| 摘要 |
The present invention relates to a motor control apparatus for reducing electromagnetic interference. According to the present invention, provided is the motor control apparatus including: a control part for generating a control signal corresponding to duty information inputted from an external module; a switching device which is applied with the control signal through a gate port, outputs a square wave PWM signal having a duty ratio corresponding to the control signal through a first stage, and operates in a switching speed in a range of 200-600 kHz using a GaN based transistor; and an electromagnetic interference noise filter part which is connected to a minus port of the motor, and converts the square wave PWM signal outputted from the switching device into a sinusoidal wave and then delivers the sinusoidal wave to the motor. According to the motor control apparatus, it is possible to achieve a compact size of a product and to reduce unit costs of a component by realizing the electromagnetic interference noise filter part in small capacity, by the high speed switching using the GaN based transistor. Also, it is possible to convert the square wave into the sinusoidal wave using a filter with small capacity, and it is possible to reduce the electromagnetic interference noise effectively through the same. Furthermore, the motor control apparatus can minimize the electromagnetic interference noise and can satisfy k version regulation, by connecting the electromagnetic interference noise filter part to the minus port or a plus port of the motor, directly. |
