Fault detection by means of Hilbert-Huang transform of the stator current in a PMSM with demagnetization
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hdl:2117/9503
Tipus de documentArticle
Data publicació2010-06
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Abstract
This paper presents a novel method to diagnose demagnetization
in permanent-magnet synchronousmotor (PMSM).
Simulations have been performed by 2-D finite-element analysis in
order to determine the current spectrum and the magnetic flux
distribution due to this failure. The diagnostic just based on motor
current signature analysis can be confused by eccentricity failure
because the harmonic content is the same. Moreover, it can
only be applied under stationary conditions. In order to overcome
these drawbacks, a novel method is used based upon the
Hilbert–Huang transform. It represents time-dependent series in a
2-D time–frequency domain by extracting instantaneous frequency
components through an empirical-mode decomposition process.
This tool is applied by running the motor under nonstationary
conditions of velocity. The experimental results show the reliability
and feasibility of the methodology in order to diagnose the demagnetization
of a PMSM.
CitacióGarcia, A. [et al.]. Fault detection by means of Hilbert-Huang transform of the stator current in a PMSM with demagnetization. "IEEE transactions on energy conversion", Juny 2010, vol. 25, núm. 2, p. 312-318.
ISSN0885-8969
Versió de l'editorhttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5404255
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