Fault determining methods for the electronic motor using the wavelet transform

摘要

The present invention relates to a method for diagnosing a failure of a synchronous motor, and more particularly, to detect a progressive failure component in a permanent magnet synchronous motor of a hybrid vehicle or an electric vehicle under various driving conditions. It relates to a failure diagnosis method of a synchronous motor, characterized in that a wavelet transform is applied to calculate an average value in real time and diagnoses a failure when the average value is greater than a reference value judged to be a failure.