Comparative investigation of diagnostic media for induction motors:a case of rotor cage faults
Trzynadlowski, A.M.
Ritchie, E.
Dept. of Electr. Eng., Nevada Univ., Reno, NV;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Oct 2000
Volume: 47,
Issue: 5
On page(s): 1092-1099
ISSN: 0278-0046
References Cited: 10
CODEN: ITIED6
INSPEC Accession Number: 6729439
Digital Object Identifier: 10.1109/41.873218
Current Version Published: 2002-08-06
Abstract
Results of a comparative experimental investigation of various
media for noninvasive diagnosis of rotor faults in induction motors are
presented. Stator voltages and currents in an induction motor were
measured, recorded, and employed for computation of the partial and
total input powers and of the estimated torque. Waveforms of the
current, partial powers pAB and pCB, total power,
and estimated torque were subsequently analyzed using the fast Fourier
transform. Several rotor cage faults of increasing severity were studied
with various load levels. The partial input power pCB was
observed to exhibit the highest sensitivity to rotor faults. This medium
is also the most reliable, as it includes a multiplicity of
fault-induced spectral components
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