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Detecting Rotor Faults In Inverter-Fed Induction Machines At Zero Load
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| Author(s) |
Th. M. Wolbank, J. L. Machl, R. Schneiderbauer |
| Abstract |
For quality management and safety
critical applications, methods of rotor bar fault-detection are
essential. The method proposed in this paper is based on a
monitoring of the asymmetrical behavior of the rotor time
constant. The rotor time constant depending on the magnetizing
angular reference to the rotor coordinate system is estimated
and observed. This is done by magnetizing and demagnetizing
the machine in a rotor fixed direction, measuring the time
constant and showing the modulation over one pole pitch. The
resulting signal is the decisive factor for the expert system
whether the rotor cage is defective or faultless. |
| Download |
| Filename: | A58312 |
| Filesize: | 335.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-17 by System |
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