TY - GEN
T1 - Pole pair and rotor slot number independent frequency domain based detection of eccentricity faults in induction machines using a semi on-line technique
AU - Nandi, S.
AU - Ilamparithi, T.
AU - Lee, S. B.
AU - Hyun, D.
PY - 2009
Y1 - 2009
N2 - Eccentricity related faults in Induction motors have been studied extensively over the last few decades . They can exist in the form of static or dynamic eccentricity or both, in which case it is called a mixed eccentricity fault. These faults cause bearing damage, excessive vibration and noise, unbalanced magnetic pull (IMP) and under extreme conditions stator-rotor rub which may seriously damage the motors. Since eccentricity faults are often associated with large induction machines, the repair or replacement costs arising out of such a scenario may easily run into tens and thousands of dollars. Previous research have shown that it is extremely difficult to detect such faults if they appear individually, rather than in mixed form, unless the number of rotor bars and pole pair number conform to certain relationships. In this paper, it is shown that the terminal voltages of induction machines at switch-off reveal certain features that can lead to the detection of these faults in individual form, even in machines that do not show these signatures in line current spectrum in steady state.
AB - Eccentricity related faults in Induction motors have been studied extensively over the last few decades . They can exist in the form of static or dynamic eccentricity or both, in which case it is called a mixed eccentricity fault. These faults cause bearing damage, excessive vibration and noise, unbalanced magnetic pull (IMP) and under extreme conditions stator-rotor rub which may seriously damage the motors. Since eccentricity faults are often associated with large induction machines, the repair or replacement costs arising out of such a scenario may easily run into tens and thousands of dollars. Previous research have shown that it is extremely difficult to detect such faults if they appear individually, rather than in mixed form, unless the number of rotor bars and pole pair number conform to certain relationships. In this paper, it is shown that the terminal voltages of induction machines at switch-off reveal certain features that can lead to the detection of these faults in individual form, even in machines that do not show these signatures in line current spectrum in steady state.
KW - Eccentricity faults
KW - Induction motor
KW - Parameter independence
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U2 - 10.1109/DEMPED.2009.5292793
DO - 10.1109/DEMPED.2009.5292793
M3 - Conference contribution
AN - SCOPUS:74349131209
SN - 9781424434411
T3 - 2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED 2009
BT - 2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED 2009
T2 - 2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED 2009
Y2 - 31 August 2009 through 3 September 2009
ER -