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DYNA

versão impressa ISSN 0012-7353

Resumo

OVIEDO, SILVIA; QUIROGA, JABID  e  BORRAS, CARLOS. MOTOR CURRENT SIGNATURE ANALYSIS AND NEGATIVE SEQUENCE CURRENT BASED STATOR WINDING SHORT FAULT DETECTION IN AN INDUCTION MOTOR. Dyna rev.fac.nac.minas [online]. 2011, vol.78, n.170, pp.214-220. ISSN 0012-7353.

In this paper, negative sequence analysis and motor current signature analysis (MCSA) based approaches are applied to perform short fault detection of a single phase winding in an induction motor. The fault detection is carried out using the negative sequence analysis and spectral analysis of current signals. An experimental analysis is presented, showing the advantages and drawbacks for each method implemented. Tests are performed in a 2 Hp induction motor dedicated to this type of study. Experimental results show variations in the fault indicator in both methods when the motor is running under different load conditions. Although the negative sequence current method demands simultaneous three phase current sensing, it presents better performance for short fault detection and provides a fault severity level estimation.

Palavras-chave : Fault detection; stator winding short circuit; sequence components; MCSA.

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