MAGNETIC FLUX MONITORING
Description
Monitoring the magnetic flux in the rotor poles of a generator allows the detection of magnetic field homogeneity anomalies.
Such a disturbance can be caused by short circuits in a pole. This failure can decrease the operating efficiency of the machine and cause strong vibrations due to magnetic unbalance.
Hall-effect sensors are used to monitor machines with a high pole count, such as hydrogenerators, turbogenerators or windturbines.
Typical faults detections
- Magnetic unbalance
- Short circuit in a pole
- Pole mechanical instability
Typical installation
One magnetic flux sensor installed on the stator
Monitoring parameters
- MPS: Maximum absolute flux deviation between two opposite poles or two adjacent poles
- CMS: Flux profile, absolute flux deviationview
Related sensors
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