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A Novel Approach for Broken Bar Fault Diagnosis in Induction Motors Through Torque Monitoring

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4 Author(s)
Gyftakis, K.N. ; Dept. of Electr. & Comput. Eng., Univ. of Patras, Patras, Greece ; Spyropoulos, D.V. ; Kappatou, J.C. ; Mitronikas, E.D.

The cracked or broken bar fault constitutes about 5-10% of total induction motor failures and leads to malfunction as well as reduction of the motor's life cycle. This is the reason why there is continuous research on techniques for prompt detection. In this study, a study of the influences of the broken bar fault to the electromagnetic characteristics of the induction motor is presented, using an asynchronous cage motor and finite element method analysis. To this direction, two models have been created and studied: a healthy and one with a broken bar. Additionally, a new approach on the detection of the broken rotor bar fault through the electromagnetic torque monitoring is suggested and validated through experimental results.

Published in:

Energy Conversion, IEEE Transactions on  (Volume:28 ,  Issue: 2 )

Date of Publication:

June 2013

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