C2.4 - Measurement system for circulating stator currents: Towards condition monitoring of large MW-scale synchronous motors
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- C2 - Applications
- S. Wildermuth, U. Ahrend, R. Disselnkötter - ABB AG, Ladenburg (Germany), P. Rodriguez - ABB AB, Västeras (Sweden), P. Rzeszucinski - ABB Sp. z o.o., Krakow (Poland), C. Pinto - ABB India Limited, Mumbai (India)
- 381 - 383
This article discusses a sensor system enabling the acquisition of circulating stator currents in the case of an industry-scale motor. The focus during development of this condition monitoring system was to achieve high measurement fidelity and, at the same time, to provide a robust and flexible sensor system which is suited for final installation in a factory environment. The layout of the sensor system as well as constraints imposed by the motor environment will be discussed. Typical circulating currents recorded with the sensor setup show a complex and rich frequency spectrum caused by the high sensitivity of the method which indicates even small asymmetries in the synchronous motor.