Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors

Yonghyun Park; Hanchun Choi; Sang Bin Lee; Konstantinos Gyftakis

doi:10.1109/ECCE.2019.8912859

Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors

Yonghyun Park, Hanchun Choi, Sang Bin Lee, Konstantinos Gyftakis

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Citations (Scopus)

Abstract

Detection of rotor cage faults in induction motors based on motor current signature analysis (MCSA) is being extensively applied in the field for preventing forced outage of the motor and industrial process. Although MCSA is very effective for detecting broken bars that are adjacent to each other, it can fail if the broken bars are non-adjacent, which is common for applications with frequent starts. If multiple broken bars are spread out at locations where the rotor "electrical" asymmetry is canceled, the presence of broken bars is difficult to detect with MCSA. A false indication can lead to a catastrophic forced outage, but the only known means of detecting this type of fault in the field is through rotor visual inspection. In this paper, the feasibility of detecting non-adjacent broken rotor bars from the rotor rotational frequency sideband components in the internal and external flux measurements during steady state and motor starting is evaluated. Experimental testing on a 7.5 hp induction motor shows that non-adjacent broken bars can be reliably detected from the analysis of flux measurements for cases where MCSA and all other electrical tests fail.

Original language	English
Title of host publication	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	7019-7026
Number of pages	8
ISBN (Electronic)	9781728103952
DOIs	https://doi.org/10.1109/ECCE.2019.8912859
Publication status	Published - 2019 Sept
Event	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States Duration: 2019 Sept 29 → 2019 Oct 3

Publication series

Name	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Country/Territory	United States
City	Baltimore
Period	19/9/29 → 19/10/3

Keywords

Airgap Flux
Fault Diagnostics
Induction Motor
Off-line Testing
Search Coil
Spectral Analysis
Squirrel Cage Rotor
Starting Transient
Stray Flux

ASJC Scopus subject areas

Mechanical Engineering
Control and Optimization
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1109/ECCE.2019.8912859

Cite this

Park, Y., Choi, H., Lee, S. B., & Gyftakis, K. (2019). Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 7019-7026). [8912859] (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2019.8912859

Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors. / Park, Yonghyun; Choi, Hanchun; Lee, Sang Bin et al.

2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 7019-7026 8912859 (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Park, Y, Choi, H, Lee, SB & Gyftakis, K 2019, Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors. in 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019., 8912859, 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019, Institute of Electrical and Electronics Engineers Inc., pp. 7019-7026, 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019, Baltimore, United States, 19/9/29. https://doi.org/10.1109/ECCE.2019.8912859

Park Y, Choi H, Lee SB, Gyftakis K. Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 7019-7026. 8912859. (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). doi: 10.1109/ECCE.2019.8912859

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abstract = "Detection of rotor cage faults in induction motors based on motor current signature analysis (MCSA) is being extensively applied in the field for preventing forced outage of the motor and industrial process. Although MCSA is very effective for detecting broken bars that are adjacent to each other, it can fail if the broken bars are non-adjacent, which is common for applications with frequent starts. If multiple broken bars are spread out at locations where the rotor {"}electrical{"} asymmetry is canceled, the presence of broken bars is difficult to detect with MCSA. A false indication can lead to a catastrophic forced outage, but the only known means of detecting this type of fault in the field is through rotor visual inspection. In this paper, the feasibility of detecting non-adjacent broken rotor bars from the rotor rotational frequency sideband components in the internal and external flux measurements during steady state and motor starting is evaluated. Experimental testing on a 7.5 hp induction motor shows that non-adjacent broken bars can be reliably detected from the analysis of flux measurements for cases where MCSA and all other electrical tests fail.",

keywords = "Airgap Flux, Fault Diagnostics, Induction Motor, Off-line Testing, Search Coil, Spectral Analysis, Squirrel Cage Rotor, Starting Transient, Stray Flux",

author = "Yonghyun Park and Hanchun Choi and Lee, {Sang Bin} and Konstantinos Gyftakis",

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AB - Detection of rotor cage faults in induction motors based on motor current signature analysis (MCSA) is being extensively applied in the field for preventing forced outage of the motor and industrial process. Although MCSA is very effective for detecting broken bars that are adjacent to each other, it can fail if the broken bars are non-adjacent, which is common for applications with frequent starts. If multiple broken bars are spread out at locations where the rotor "electrical" asymmetry is canceled, the presence of broken bars is difficult to detect with MCSA. A false indication can lead to a catastrophic forced outage, but the only known means of detecting this type of fault in the field is through rotor visual inspection. In this paper, the feasibility of detecting non-adjacent broken rotor bars from the rotor rotational frequency sideband components in the internal and external flux measurements during steady state and motor starting is evaluated. Experimental testing on a 7.5 hp induction motor shows that non-adjacent broken bars can be reliably detected from the analysis of flux measurements for cases where MCSA and all other electrical tests fail.

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KW - Stray Flux

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ER -

Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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