Failure identification of induction motor using SFRA method

Abstract

This paper deals with experimental measurements and analysis of frequency responses SFRA (Sweep Frequency Response Analysis) measured on induction machines (IM) to the rated power of 5kW. For the rotating machines will be established the measurement procedure of frequency responses by comparing the methodology used for power transformers to respect the International standard IEC 60076-18. For the applying method SFRA for the purpose of diagnosis and analysis of the rotating machine state there are processed the results from the standard used electric diagnostic measurements for the rotating machines - measurement of the insulation condition, stator winding resistance with squirrel cage rotor and armature winding. The purpose of the experimental measurements is implementation of the SFRA method for the failure identification that arise in power IM with the rated power over 10 kW.