Method and system for detecting the cabling errors between a starter and an electric motor

摘要

The method involves applying voltage in a triangle arm of an asynchronous electric motor. A power semi-conductor of the triangle arm is initiated after the delay on the initiation using a control unit (10). Electric current generated in the triangle arm during the initiation of a thyristor arm (T1) is measured using an electric current measuring unit (12). A wiring configuration of the triangle arm is determined using a processing unit (11) according to the measured electric current and by comparing a current rating of the motor and a maximum value of the measured electric current. An independent claim is also included for a system for controlling an asynchronous electric motor having windings distributed on three branches configured in triangle.