Corrosion model of a rotor-bar-under-fault progress in induction motors
SCIE
SCOPUS
- Title
- Corrosion model of a rotor-bar-under-fault progress in induction motors
- Authors
- Jung, JH; Kwon, BH
- Date Issued
- 2006-12
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGI
- Abstract
- A corrosion model of a rotor-bar-under-fault progress in induction motors is presented for simulations of induction machines with a rotor-bar fault. A rotor-bar model is derived from the electromagnetic theory. A leakage inductance of the corrosion model of a rotor bar is calculated from the relations of magnetic energy, inductance, current, and magnetic-field intensity by Ampere's law. The leakage inductance and resistance of a rotor bar varies when the rotor bar rusts. In addition, the skin effect is considered to establish the practical model of a rotor bar. Consequently, the variation of resistance and leakage inductance has an effect on the results of motor dynamic simulations and experiments, since a corrosive rotor bar is one model of a rotor bar in fault progress. The results of simulations and experiments are shown to be in good agreement with the spectral analysis of stator-current harmonics. From the proposed corrosion model, motor current signature analysis can detect the fault of a corrosive rotor bar as the progress of a rotor-bar fault. Computer simulations were achieved using the MATLAB Simulink with an electrical model of a 3.7-kW, three-phase, and squirrel-cage induction motor. Also, experimental results were obtained by real induction motors, which had the same specification as the electrical model used in the simulation.
- Keywords
- corrosion model; induction motor; motor current signature analysis (MCSA); motor diagnosis; motor modeling; rotor-bar fault; DYNAMIC SIMULATION; MACHINES; ECCENTRICITY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23681
- DOI
- 10.1109/TIE.2006.885133
- ISSN
- 0278-0046
- Article Type
- Article
- Citation
- IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 53, no. 6, page. 1829 - 1841, 2006-12
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