Detection of static eccentricity for permanent magnet synchronous motors using the coherence analysis

Authors : Mehmet AKAR, Sezai TAŞKIN, Serhat ŞEKER, İlyas ÇANKAYA

Pages : 963-974

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This paper reports on work to detect the static eccentricity faults for permanent magnet synchronous motor insert ignore into journalissuearticles values(PMSM); using spectral analysis methods. Measurements are carried out by collecting the stator current and voltage, torque and speed for healthy and faulty cases of the motor. Static eccentricity case is formed by changing the rotor position in the manner of sliding the shaft on a horizontal axis. As a result of the spectral analysis for the motor currents, side band effects appeared at around the fundamental frequency are determined as a most important indicator of the eccentricity. In addition to this determination, the eccentricity problem is observed from the torque and rotor speed data comparing with each others as well as current and voltage variations.
Keywords : Permanent magnet synchronous motor, eccentricity, fault diagnosis, spectral analysis