Induction Motor Diagnosis by Advanced Notch FIR Filters and the Wigner–Ville Distribution

V. Climente-Alarcón,J. Antonino-Daviu,M. Riera-Guasp,M. Vlcek

Published 2014 in IEEE transactions on industrial electronics (1982. Print)

ABSTRACT

During the last years, several time-frequency decomposition tools have been applied for the diagnosis of induction motors, for those cases in which the traditional procedures, such as motor current signature analysis, cannot yield the necessary response. Among them, the Cohen distributions have been widely selected to study transient and even stationary operation due to their high-resolution and detailed information provided at all frequencies. Their main drawback, the cross-terms, has been tackled either modifying the distribution, or carrying out a pretreatment of the signal before computing its time-frequency decomposition. In this paper, a filtering process is proposed that uses advanced notch filters in order to remove constant frequency components present in the current of an induction motor, prior to the computation of its distribution, to study rotor asymmetries and mixed eccentricities. In transient operation of machines directly connected to the grid, this procedure effectively eliminates most of the artifacts that have prevented the use of these tools, allowing a wideband analysis and the definition of a precise quantification parameter able to follow the evolution of their state.

PUBLICATION RECORD

  • Publication year

    2014

  • Venue

    IEEE transactions on industrial electronics (1982. Print)

  • Publication date

    2014-08-01

  • Fields of study

    Computer Science, Engineering

  • Identifiers
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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