@inproceedings{7d1239cdf632484cbe7c33df4c29e657,
title = "Detection and Classification of Damper Bar and Field Winding Faults in Salient Pole Synchronous Motors",
abstract = "Recent cases of broken damper bars and shorted field winding turns in synchronous motors (SM) have shown that rotor faults can degrade motor performance and lead to a forced outage of the motor and driven process. However, detection of SM rotor faults has not received much attention since SMs are not as common as induction motors. Detection of SM rotor faults is difficult, as the damper bar is active only under the starting or load transients, and shorted field winding turns result only in a slight increase in rotating asymmetry. SM rotor fault testing in the field mainly relies on visual inspection or off-line tests, and new test methods that can provide reliable detection of the faults without motor disassembly is highly desirable. In this paper, new test methods for not only detecting, but also classifying the two types of SM rotor faults under motor standstill and starting are proposed. An experimental study on a 30 kW salient pole SM is provided to verify the proposed methods. It is shown that damper and field winding faults can be detected and classified with high sensitivity and reliability compared to conventional tests.",
keywords = "Airgap Flux, Damper Bar, Fault Diagnostics, Field Winding, Off-line Testing, Salient Pole Synchronous Motor, Search Coil, Spectral Analysis, Starting Transient",
author = "Y. Park and Lee, {S. B.} and J. Yun and M. Sasic and Stone, {G. C.}",
year = "2019",
month = sep,
doi = "10.1109/ECCE.2019.8911843",
language = "English",
series = "2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "4491--4498",
booktitle = "2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019",
note = "11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 ; Conference date: 29-09-2019 Through 03-10-2019",
}