Induction Machine Broken-bar Fault Diagnosis Using the Rotor Magnetic Field Space-vector Orientation
Document Type
Article
Language
eng
Format of Original
9 p.
Publication Date
3-2004
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Source Publication
IEEE Transactions on Industry Applications
Source ISSN
0093-9994
Abstract
A new technique based on rotor magnetic field space vector orientation is presented to diagnose broken-bar faults in induction machines operating at steady state. In this technique, stator currents and voltages are used as inputs to compute and subsequently observe the rotor magnetic field orientation, which has a more significant "swing-like" pendulous oscillation in case of broken-bar faults than in healthy operation. It will be shown here that the range of this "pendulous oscillation" is a function of the number of broken bars. Also in this technique, it was found that an inter-turn shorted stator-winding fault, which exhibits similar pendulous oscillation, could be distinguished from rotor broken-bar faults through the use of a variance index. In order to validate this method, experimental evidence is given here for several broken-bar cases in a 2-hp three-phase two-pole squirrel-cage induction machine.
Recommended Citation
Mirafzal, Behrooz and Demerdash, Nabeel, "Induction Machine Broken-bar Fault Diagnosis Using the Rotor Magnetic Field Space-vector Orientation" (2004). Electrical and Computer Engineering Faculty Research and Publications. 193.
https://epublications.marquette.edu/electric_fac/193
ADA Accessible Version
Comments
Accepted version. IEEE Transactions on Industry Applications, Vol. 40, No. 2 (March-April 2004): 534-542. DOI. © 2004 Institute of Electrical and Electronic Engineers (IEEE). Used with permission.