Abstract
This paper investigates wound rotor induction machine stator fault detection by vibration analysis under variable speed operation. The influence of stator electrical fault on machine operation is first examined using a time-stepped circuit model. The simulation results indicate that fault specific frequencies appear in the electromagnetic signal as a result of pulsating torques produced by stator asymmetric conditions. The fault specific frequencies are then translated into mechanical vibration at the machine frame that can be employed for fault detection purposes using conventional vibration analysis. Measurements taken in a series of laboratory tests on a commercial 30 kW machine under variable speed operation are used to investigate the spectral content of the generator vibration signal.
| Original language | English |
|---|---|
| Title of host publication | European Wind Energy Conference and Exhibition, EWEC 2013|Eur. Wind Energy Conf. Exhib., EWEC |
| Place of Publication | http://proceedings.ewea.org/annual2013/allfiles2/931_EWEA2013presentationfinal.pdf |
| Publisher | EWEA |
| Pages | 1930-1936 |
| Number of pages | 6 |
| Volume | 3 |
| ISBN (Print) | 9781632663146 |
| Publication status | Published - 2013 |
| Event | European Wind Energy Conference and Exhibition, EWEC 2013 - Vienna Duration: 1 Jul 2013 → … |
Conference
| Conference | European Wind Energy Conference and Exhibition, EWEC 2013 |
|---|---|
| City | Vienna |
| Period | 1/07/13 → … |
Keywords
- Condition monitoring
- Induction generator
- Stator fault detection
- Variable speed
- Vibration analysis
