TY - JOUR
T1 - Electrical monitoring of damper bar condition in salient-pole synchronous motors without motor disassembly
AU - Antonino-Daviu, Jose
AU - Fuster-Roig, Vicente
AU - Park, Sanguk
AU - Park, Yonghyun
AU - Choi, Hanchun
AU - Park, Jongsan
AU - Lee, Sang Bin
N1 - Funding Information:
Manuscript received October 23, 2019; revised December 20, 2019; accepted January 5, 2020. Date of publication January 12, 2020; date of current version March 17, 2020. Paper 2019-EMC-1362.R1, presented at the 2019 Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, Toulouse, France, Aug. 27–30, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Electric Machines Committee of the IEEE Industry Applications Society. This work was supported by the National Research Foundation of Korea Grant funded by the Korea government (MSIT) under Grant NRF-2019R1A2C1084104. (Corresponding author: Sang Bin Lee.) J. Antonino-Daviu and V. Fuster-Roig are with the Instituto Tecnológico de la Energía, Universitat Politècnica de València, Valencia 46022, Spain (e-mail: joanda@die.upv.es; vfuster@ite.upv.es).
Publisher Copyright:
© 1972-2012 IEEE.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - The damper (or amortisseur) winding of synchronous motors (SMs) is a critical component required for starting the motor. Several cases of the forced outage of industrial processes due to the starting failure of salient-pole SMs caused by damper bar failure have recently been reported. The detection of broken damper bars is difficult since they are active only during rotor acceleration, and offline visual inspection is the only means of testing available in the field. It was recently shown that the broken damper bars can be detected from the airgap flux, but this requires the installation of airgap flux sensors inside the motor. In this article, a method based on the analysis of the stator starting current is proposed for detecting broken damper bars. In addition, an electrical detection method based on signal injection from the motor terminals is proposed. The new methods have been devised to provide remote testing from the motor control center without motor disassembly required in existing tests. Finite-element analysis (1 MW) and experimental testing (30 kW) performed on salient-pole SMs with emulated broken damper bars show that the proposed methods can provide the sensitive and reliable detection of damper bar failures.
AB - The damper (or amortisseur) winding of synchronous motors (SMs) is a critical component required for starting the motor. Several cases of the forced outage of industrial processes due to the starting failure of salient-pole SMs caused by damper bar failure have recently been reported. The detection of broken damper bars is difficult since they are active only during rotor acceleration, and offline visual inspection is the only means of testing available in the field. It was recently shown that the broken damper bars can be detected from the airgap flux, but this requires the installation of airgap flux sensors inside the motor. In this article, a method based on the analysis of the stator starting current is proposed for detecting broken damper bars. In addition, an electrical detection method based on signal injection from the motor terminals is proposed. The new methods have been devised to provide remote testing from the motor control center without motor disassembly required in existing tests. Finite-element analysis (1 MW) and experimental testing (30 kW) performed on salient-pole SMs with emulated broken damper bars show that the proposed methods can provide the sensitive and reliable detection of damper bar failures.
KW - Condition monitoring
KW - fault diagnostics
KW - motor testing
KW - salient-pole synchronous motor (SM)
KW - spectral analysis
UR - http://www.scopus.com/inward/record.url?scp=85081995670&partnerID=8YFLogxK
U2 - 10.1109/TIA.2020.2965903
DO - 10.1109/TIA.2020.2965903
M3 - Article
AN - SCOPUS:85081995670
VL - 56
SP - 1423
EP - 1431
JO - IEEE Transactions on Industry Applications
JF - IEEE Transactions on Industry Applications
SN - 0093-9994
IS - 2
M1 - 8957277
ER -