Broken rotor bars fault detection in squirrel cage induction machines

Intensive research efforts have been focused on the signature analysis (SA) to detect electrical and mechanical faults of three-phase squirrel-cage induction machines. For this purpose, different signals can be used such as stator voltages, stator currents, stray flux and input power. The diagnosis methods based on current signals analysis (CSA) are the most popular. The interpretation of one-phase current spectrum or three-phase current space vector spectrum provides direct information on the presence of abnormal conditions. In this paper, attention has been paid to the stray flux for rotor fault diagnosis of the three-phase squirrel-cage induction machines