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Broken Rotor Bars Detection In Induction Machines Using A Variable Structure Observer And Kalman Filtering
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| Author(s) |
Eltabach Mario, Charara Ali |
| Abstract |
One of the most important issues when implementing
control and fault diagnosis systems for induction motor drives is
obtaining accurate information about the state of certain motor
electromagnetic signals such as stator flux and electromagnetic
torque. This paper examines the detection of rotor imperfections
through spectral analysis of the electromagnetic torque,
computed by two stator flux estimators, and using only noninvasive
sensors such as current and voltage sensors. In a first
approach the variable structure observer is used to estimate
stator flux components without sensing or estimating the
velocity of rotation. The second approach uses an extended
Kalman filter (EKF) to estimate flux components and velocity. A
comparison of experimental results demonstrates the significant
potential of these methods in detecting these types of faults. |
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| Filename: | A42380 |
| Filesize: | 252.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-16 by System |
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