Electrical monitoring of damper bar condition in salient-pole synchronous motors without motor disassembly

Jose Antonino-Daviu; Vicente Fuster-Roig; Sanguk Park; Yonghyun Park; Hanchun Choi; Jongsan Park; Sang Bin Lee

doi:10.1109/TIA.2020.2965903

Electrical monitoring of damper bar condition in salient-pole synchronous motors without motor disassembly

Jose Antonino-Daviu
, Vicente Fuster-Roig
, Sanguk Park
, Yonghyun Park
, Hanchun Choi
, Jongsan Park
, Sang Bin Lee^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

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.

Original language	English
Article number	8957277
Pages (from-to)	1423-1431
Number of pages	9
Journal	IEEE Transactions on Industry Applications
Volume	56
Issue number	2
DOIs	https://doi.org/10.1109/TIA.2020.2965903
Publication status	Published - 2020 Mar 1

Bibliographical note

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: [email protected]; [email protected]).

Publisher Copyright:
© 1972-2012 IEEE.

Keywords

Condition monitoring
fault diagnostics
motor testing
salient-pole synchronous motor (SM)
spectral analysis

ASJC Scopus subject areas

Control and Systems Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/TIA.2020.2965903

Cite this

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title = "Electrical monitoring of damper bar condition in salient-pole synchronous motors without motor disassembly",

abstract = "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.",

keywords = "Condition monitoring, fault diagnostics, motor testing, salient-pole synchronous motor (SM), spectral analysis",

author = "Jose Antonino-Daviu and Vicente Fuster-Roig and Sanguk Park and Yonghyun Park and Hanchun Choi and Jongsan Park and Lee, \{Sang Bin\}",

note = "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 Tecnol{\'o}gico de la Energ{\'i}a, Universitat Polit{\`e}cnica de Val{\`e}ncia, Valencia 46022, Spain (e-mail: [email protected]; [email protected]). Publisher Copyright: {\textcopyright} 1972-2012 IEEE.",

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AU - Choi, Hanchun

AU - Park, Jongsan

AU - Lee, Sang Bin

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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.

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ER -

Electrical monitoring of damper bar condition in salient-pole synchronous motors without motor disassembly

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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