Title :
Detecting rotor faults in permanent magnet synchronous machines
Author :
le Roux, W. ; Harley, R.G. ; Habetler, T.G.
Author_Institution :
Condition Assessment Technol., Johannesburg, South Africa
Abstract :
This paper investigates the experimental implementation and detection of rotor faults in permanent magnet synchronous machines. Methods are shown of how to experimentally introduce static and dynamic eccentricities and broken magnet cases. A magnet strength estimation that does not require the measurement of the rotor position or speed is developed. The detection of these and other rotor faults by measuring only the stator currents and voltages are shown experimentally. The paper concludes with a description of a condition-monitoring scheme for detection of rotor faults.
Keywords :
condition monitoring; electric current measurement; fault diagnosis; permanent magnet motors; rotors; stators; synchronous motors; voltage measurement; 2.85 kW; broken magnet cases; condition-monitoring; dynamic eccentricities; magnet strength estimation; permanent magnet synchronous machines; rotor faults detection; static eccentricities; stator currents measurement; stator voltages measurement; Circuit faults; Current measurement; Electrical fault detection; Fault detection; Machining; Magnetic flux; Permanent magnet machines; Permanent magnets; Shafts; Stators;
Conference_Titel :
Diagnostics for Electric Machines, Power Electronics and Drives, 2003. SDEMPED 2003. 4th IEEE International Symposium on
Print_ISBN :
0-7803-7838-5
DOI :
10.1109/DEMPED.2003.1234573
