Title :
Influence of the magnetic steel encasing of induction motors on the efficiency of the rotor faults diagnosis based on the harmonics of the coil sensors output voltage
Author :
Fireteanu, V. ; Taras, P.
Author_Institution :
Electr. Eng. Fac., EPM-NM-Lab., Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
This paper deals with the influence of the magnetic steel encasing of squirrel cage induction motors on the efficiency of one broken bar and rotor dynamic eccentricity faults diagnosis based on the harmonics of the output voltage of coil sensors placed outside the motor. The effects of the rotor faults on the electromagnetic torque and on the unbalanced force of rotor - stator interaction are evaluated. The most important harmonics for fault diagnosis are determined for a high power low rated slip motor, without and with a magnetic steel encasing thick enough with respect the penetration depth of the main traveling field of the motor.
Keywords :
coils; fault diagnosis; machine testing; rotors; slip (asynchronous machines); squirrel cage motors; stators; torque; broken bar; coil sensors; electromagnetic torque; magnetic steel encasing; penetration depth; rotor dynamic eccentricity faults diagnosis; rotor-stator interaction; slip motor; squirrel cage induction motors; Fault diagnosis; Harmonic analysis; Induction motors; Magnetic fields; Rotors; Steel; Synchronous motors; coil sensor harmonics; computer simulation; induction motors; rotor fault diagnosis;
Conference_Titel :
Electrical Machines (ICEM), 2012 XXth International Conference on
Conference_Location :
Marseille
Print_ISBN :
978-1-4673-0143-5
Electronic_ISBN :
978-1-4673-0141-1
DOI :
10.1109/ICElMach.2012.6350117
