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Diagnostic start-up test to detect induction motor broken bars via short-time MUSIC algorithm applied to current space vector
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| Author(s) |
F. Cupertino; G. Martorana; L. Salvatore; S. Stasi |
| Abstract |
This paper presents a new technique to diagnose broken rotor bars in squirrel cage induction machines.
The technique is based on the analysis of the current space vector during motor starting via Short-
Time MUSIC (STMUSIC) pseudo-spectrum. Differently from most of the diagnostic techniques
already proposed in the technical literature, the approach presented in this work is effective regardless
the load condition of the machine. Both STFFT and STMUSIC have been used to process the motor
current space-vector. The latter approach, that is based on the eigen-analysis of the autocorrelation
matrix, permits to keep only the principal frequency components of the signal and to decrease the
noise influence, thus allowing a better interpretation of the current spectrum and an automatic fault
detection procedure. |
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| Filename: | EPE2003-PP0095 - Cupertino |
| Filesize: | 1.018 MB |
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| Type |
Members Only |
| Date |
Last modified 2004-02-05 by Unknown |
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