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Detection and analysis of rotor faults in induction motors by the measurement of the stray magnetic flux

2012; Sociedade Brasileira de Microondas e Optoeletrônica; Sociedade Brasileira de Eletromagnetismo; Volume: 11; Issue: 1 Linguagem: Inglês

10.1590/s2179-10742012000100006

ISSN

2179-1074

Autores

M. Rigoni, N. Sadowski, Nelson Jhoe Batistela, J.P.A. Bastos, S.L. Nau, A. Kost,

Tópico(s)

Magnetic Properties and Applications

Resumo

This paper presents measured data and electromagnetic FEM field calculations as techniques for detecting and analyzing eccentricity in three-phase induction motors. Also it presents experimental results for detecting broken bars in induction motor rotors. A search-coil is used as magnetic field sensor to measure the stray magnetic flux outside the motor. It is a totally non-invasive method.

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