Low order PWM inverter harmonics contributions to the inverter-fed induction machine fault diagnosis

Akin B., Orguner U., Toliyat H. A., Rayner M.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, cilt.55, sa.2, ss.610-619, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 2
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1109/tie.2007.911954
  • Dergi Adı: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.610-619
  • Anahtar Kelimeler: bearing faults, condition monitoring, current signature analysis, fault diagnosis, inverter harmonics, spectral analysis, BROKEN ROTOR BAR, DETECTION SCHEMES, MOTOR, ECCENTRICITY, SIGNALS
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

In this paper, the effects of inverter harmonies on motor current fault signatures are studied in detail. It is theoretically and experimentally shown that the fault signatures caused by the inverter harmonies are similar and comparable to those generated by the fundamental harmonic on the line current. Theoretically-derived extended relations including bearing fault, eccentricity, and broken rotor bar relations are found to match experimental results. Furthermore, it is observed and reported that the asymmetries on the rotor caused by broken rotor bars increase the amplitude of even harmonies. To confirm these claims, bearing, eccentricity, and broken rotor bar faults are tested and the line current spectrum of each faulty motor is compared with the healthy one. The proposed additional fault data are expected to contribute positively to the inverter-fed motor fault decision-making algorithms.