A New Fault Diagnosis Approach for Brushless Doubly Fed Machines for Wind Turbine Generator Applications

Salman Abdi Jalebi, Mark Tatlow, Ehsan Abdi, Richard McMahon, Sam Amiri

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The Brushless Doubly Fed Machine (BDFM) with high reliability and robust structure demonstrates commercial and technical advantages both as a generator and motor for variable speed applications. As a generator it is particularly attractive to be used in offshore wind turbines where reliability improvement and maintenance cost reduction are the key factors in market growth. As a motor it may be utilized for adjustable speed drives. In this study, a continuous wavelet transform (CWT) technique using a wavelet-based adoptive filter has been proposed for the BDFM fault detection as a generator operating in a wind turbine. Three different generator-typed faults namely rotor torque perturbation, rotor broken bar and grid overvoltage faults have been considered to assess the practicality of the proposed technique. The study has been performed on a D400 250kW BDFM.

Original languageEnglish
Number of pages7
Publication statusPublished - 1 Dec 2020
EventInternational Conference on Electrical Machines (ICEM) - Gothenburg, Sweden
Duration: 23 Aug 2020 → …


ConferenceInternational Conference on Electrical Machines (ICEM)
Period23/08/20 → …


  • Brushless Doubly Fed Machine (BDFM)
  • Condition Monitoring
  • Continuous Wavelet Transform (CWT)
  • Fault Diagnosis
  • Rotor Broken Bar
  • Torque Perturbation

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