Open AccessMethod of diagnostics of the rotor eccentricity of an induction motor
Author(s) -
A. Yu Prudnikov,
В. В. Боннет,
A. Loginov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1515/5/052030
Subject(s) - squirrel cage rotor , eccentricity (behavior) , rotor (electric) , wound rotor motor , transient (computer programming) , induction motor , control theory (sociology) , bearing (navigation) , turbomachinery , turbine , electric motor , block diagram , engineering , amplitude , automotive engineering , computer science , voltage , physics , electrical engineering , mechanical engineering , law , operating system , control (management) , quantum mechanics , artificial intelligence , political science
The main type of electric motors used in the electric drive of technological processes are induction motors with a squirrel-cage rotor. With proper operation, they have a higher MTBF (Mean Time Between Failures). It was found that one of the common causes of engine failure is bearing wear and, as a result, increased rotor eccentricity. We used the oscillating amplitude of the rotor speed in the transient state as a diagnostic parameter. The paper presents a method for this troubleshooting, a block scheme and appearance of the experimental installation, and a single-line diagram of the transmitter for measuring rpm. The experience has established the optimal ADC sampling frequency for experimentation to be carried out. The results of studies of changes in the rotor speed oscillating from time to time under load at rotor eccentricity have been given.