Adaptation of Gershgorin Disk for Motor Fault Analysis

Abstract

This paper proposes a new method of motor fault analysis. Gershgorin Disk is proposed as a key technique for processing all the 3 stator phase currents. Gershgorin Disk is broadly applied to estimate sources with unknown signal numbers. This paper introduces the technique for motor fault analysis. The method is expected to provide a high accuracy method of fault analysis. The Gershgorin Disk is tested with a source of 3 sinusoidal stator phase currents under different conditions. There are 3 different motor conditions: healthy, stator fault, and rotor fault motor at full load condition. Based on experiments, the method can show differentiation of motor conditions with high accuracy. They seem also to be able to indicate fault severity levels by observing radii and center of among the disks.