Condition Based Monitoring - Rotor Magnetic Flux
Rotor flux monitoring using air gap flux probes is the most powerful means to determine if turn-to-turn shorts have occurred in the rotor winding of generators and synchronous motors. This information is critical in planning maintenance, explaining abnormal vibrations and verifying new and rewound rotor integrity.
A turn-to-turn short is the most frequent rotor insulation failure mechanism and can result in:
- Thermal imbalance of the rotor pole, leading to increased mechanical vibration
- Magnetic imbalance in the flux resulting in mechanical vibration
- Inability to reach the rated MVA for that machine
- Rotor ground insulation failure
Iris Power provides flux monitoring solutions that include a flux probe designed specifically for the air gap distance in between the rotor and stator sending data to the instrument and diagnostic software.
