METHOD FOR DIAGNOSING ROTOR DEFECT AND LOAD DEFECT OF INDUCTION MOTOR USING CURRENT SPACE VECTOR AND FOURIER OR WAVELET TRANSFORM AND APPARATUS THEREOF

摘要

Various embodiments of the present invention relate to a method for diagnosing a rotor defect and a load defect of an induction motor and an apparatus thereof. According to various embodiments of the present invention, an apparatus for diagnosing a rotor defect and a load defect of an induction motor comprises: a current data acquisition unit which acquires current data output from the induction motor; a state determination unit which checks the state of the induction motor based on the current data received from the current data acquisition unit; a data conversion unit which acquires frequency spectrum data based on the current data; and a defect diagnosis unit which determines whether the induction motor is defective based on the frequency spectrum data. When the state of the induction motor is a steady state, the data conversion unit acquires the frequency spectrum data by using Fourier transform and when the state of the induction motor is a transient state, acquires the frequency spectrum data by using wavelet transform. Other embodiments may be possible. The present invention can diagnose defects of an induction motor regardless of the state of the induction motor.;COPYRIGHT KIPO 2020