THE MAGNETIC FIELD IN THE AIR GAP IN THE PRESENCE OF ROTOR ECCENTRICITY IN ALTERNATING CURRENT TRACTION MOTORS
Keywords:
Asynchronous motor, rotor eccentricity, static eccentricity, dynamic eccentricity, air gap permeability, magnetic flux, harmonic distortion, motor diagnostics, electromagnetic field, fault analysis.Abstract
This study focuses on analyzing the effects of eccentricity on the magnetic field characteristics of asynchronous motors. The paper investigates the air gap variations under static and dynamic eccentricity conditions and presents mathematical models to quantify these variations. Static and dynamic rotor eccentricities are analyzed, highlighting their impact on the harmonic components of air gap permeability and magnetic flux distribution. Key findings demonstrate that harmonic distortions caused by eccentricity require careful consideration during the design and diagnostics of motors to ensure efficient performance and prevent potential failures. Experimental data validate the proposed models, showing that accounting for higher-order harmonics provides more accurate estimations of air gap permeability and electromagnetic field behavior. The research contributes to improving motor diagnostics by offering advanced methods for analyzing eccentricity-induced phenomena
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