Motor drive control device of drum washing machine

摘要

A drum washing machine driven by a motor, the drum washing machine comprising: a rectifier for rectifying and smoothing input AC power and supplying the AC power to the motor, A relay part for switching the output power of the rectifying and smoothing part to the motor in a forward or reverse direction and applying the rectified and smoothed output power to the motor to sense the rotational speed of the motor driven by the rectified and smoothed power, The drum drive motor is controlled by the control unit so that a reverse voltage proportional to the rotational speed of the drum drive motor is applied to the drum drive motor under the control of the relay unit, Therefore, it is possible to open the door when requested by the user, thereby increasing the efficiency of use of the drum washing machine .