Motor lock error presence determining method for washing machine, involves determining presence of motor lock error in sensorless motor, when calculated difference is equal to or higher than preset reference difference

摘要

The method involves arranging a sensorless motor to a preset position, and measuring a current applied to the sensorless motor. A difference between the measured current with a preset reference current is calculated. The presence of a motor lock error in the sensorless motor is determined, if the calculated difference is equal to or higher than a preset reference difference. The motor is controlled to be normally operated. An independent claim is also included for a motor lock error presence determining apparatus in a sensorless motor, comprising a rectifier unit for receiving an alternate current (AC) voltage from an alternate current (AC) power source.