Automated monitoring of airgap eccentricity for inverter-fed induction motors under standstill conditions

Doosoo Hyun; Jongman Hong; Sang Bin Lee; Kwonhee Kim; Ernesto J. Wiedenbrug; Mike Teska; Subhasis Nandi; Ilamparithi T. Chelvan

doi:10.1109/ECCE.2010.5617947

Automated monitoring of airgap eccentricity for inverter-fed induction motors under standstill conditions

Doosoo Hyun, Jongman Hong, Sang Bin Lee, Kwonhee Kim, Ernesto J. Wiedenbrug, Mike Teska, Subhasis Nandi, Ilamparithi T. Chelvan

School of Electrical Engineering

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

6 Citations (Scopus)

Abstract

There are many limitations to applying on-line spectrum analysis techniques for diagnosis of closed loop inverter-fed induction motors due to variable load or frequency operation, and the masking effect of the current regulator. In this paper, a new automated approach for testing inverter-fed induction machines for airgap eccentricity is proposed. The main concept is to use the inverter to excite the machine with a pulsating field at multiple angular positions to observe the variation of equivalent impedance due to eccentricity, whenever the motor is stopped. It is shown that the increase in the value of the equivalent (leakage) inductance under standstill excitation can be used as an indicator of increasing airgap eccentricity. Standstill testing can provide reliable assessment of eccentricity that is independent of variations in operating conditions, load interferences, or motor type. An experimental study on a 7.5hp induction motor verifies that eccentricity can be detected with high sensitivity and reliability without additional hardware.

Original language	English
Title of host publication	2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
Pages	2485-2492
Number of pages	8
DOIs	https://doi.org/10.1109/ECCE.2010.5617947
Publication status	Published - 2010
Event	2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Atlanta, GA, United States Duration: 2010 Sept 12 → 2010 Sept 16

Publication series

Name	2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

Other

Other	2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
Country/Territory	United States
City	Atlanta, GA
Period	10/9/12 → 10/9/16

Keywords

AC machine
Airgap eccentricity
Condition monitoring
Diagnostics
Induction motors
Inverters
Off-line testing
Spectrum analysis

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/ECCE.2010.5617947

Cite this

Hyun, D., Hong, J., Lee, S. B., Kim, K., Wiedenbrug, E. J., Teska, M., Nandi, S., & Chelvan, I. T. (2010). Automated monitoring of airgap eccentricity for inverter-fed induction motors under standstill conditions. In 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings (pp. 2485-2492). Article 5617947 (2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings). https://doi.org/10.1109/ECCE.2010.5617947

Automated monitoring of airgap eccentricity for inverter-fed induction motors under standstill conditions. / Hyun, Doosoo; Hong, Jongman; Lee, Sang Bin et al.
2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings. 2010. p. 2485-2492 5617947 (2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings).

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

Hyun, D, Hong, J, Lee, SB, Kim, K, Wiedenbrug, EJ, Teska, M, Nandi, S & Chelvan, IT 2010, Automated monitoring of airgap eccentricity for inverter-fed induction motors under standstill conditions. in 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings., 5617947, 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings, pp. 2485-2492, 2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010, Atlanta, GA, United States, 10/9/12. https://doi.org/10.1109/ECCE.2010.5617947

Hyun D, Hong J, Lee SB, Kim K, Wiedenbrug EJ, Teska M et al. Automated monitoring of airgap eccentricity for inverter-fed induction motors under standstill conditions. In 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings. 2010. p. 2485-2492. 5617947. (2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings). doi: 10.1109/ECCE.2010.5617947

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title = "Automated monitoring of airgap eccentricity for inverter-fed induction motors under standstill conditions",

abstract = "There are many limitations to applying on-line spectrum analysis techniques for diagnosis of closed loop inverter-fed induction motors due to variable load or frequency operation, and the masking effect of the current regulator. In this paper, a new automated approach for testing inverter-fed induction machines for airgap eccentricity is proposed. The main concept is to use the inverter to excite the machine with a pulsating field at multiple angular positions to observe the variation of equivalent impedance due to eccentricity, whenever the motor is stopped. It is shown that the increase in the value of the equivalent (leakage) inductance under standstill excitation can be used as an indicator of increasing airgap eccentricity. Standstill testing can provide reliable assessment of eccentricity that is independent of variations in operating conditions, load interferences, or motor type. An experimental study on a 7.5hp induction motor verifies that eccentricity can be detected with high sensitivity and reliability without additional hardware.",

keywords = "AC machine, Airgap eccentricity, Condition monitoring, Diagnostics, Induction motors, Inverters, Off-line testing, Spectrum analysis",

author = "Doosoo Hyun and Jongman Hong and Lee, {Sang Bin} and Kwonhee Kim and Wiedenbrug, {Ernesto J.} and Mike Teska and Subhasis Nandi and Chelvan, {Ilamparithi T.}",

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AU - Hong, Jongman

AU - Lee, Sang Bin

AU - Kim, Kwonhee

AU - Wiedenbrug, Ernesto J.

AU - Teska, Mike

AU - Nandi, Subhasis

AU - Chelvan, Ilamparithi T.

PY - 2010

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N2 - There are many limitations to applying on-line spectrum analysis techniques for diagnosis of closed loop inverter-fed induction motors due to variable load or frequency operation, and the masking effect of the current regulator. In this paper, a new automated approach for testing inverter-fed induction machines for airgap eccentricity is proposed. The main concept is to use the inverter to excite the machine with a pulsating field at multiple angular positions to observe the variation of equivalent impedance due to eccentricity, whenever the motor is stopped. It is shown that the increase in the value of the equivalent (leakage) inductance under standstill excitation can be used as an indicator of increasing airgap eccentricity. Standstill testing can provide reliable assessment of eccentricity that is independent of variations in operating conditions, load interferences, or motor type. An experimental study on a 7.5hp induction motor verifies that eccentricity can be detected with high sensitivity and reliability without additional hardware.

AB - There are many limitations to applying on-line spectrum analysis techniques for diagnosis of closed loop inverter-fed induction motors due to variable load or frequency operation, and the masking effect of the current regulator. In this paper, a new automated approach for testing inverter-fed induction machines for airgap eccentricity is proposed. The main concept is to use the inverter to excite the machine with a pulsating field at multiple angular positions to observe the variation of equivalent impedance due to eccentricity, whenever the motor is stopped. It is shown that the increase in the value of the equivalent (leakage) inductance under standstill excitation can be used as an indicator of increasing airgap eccentricity. Standstill testing can provide reliable assessment of eccentricity that is independent of variations in operating conditions, load interferences, or motor type. An experimental study on a 7.5hp induction motor verifies that eccentricity can be detected with high sensitivity and reliability without additional hardware.

KW - AC machine

KW - Airgap eccentricity

KW - Condition monitoring

KW - Diagnostics

KW - Induction motors

KW - Inverters

KW - Off-line testing

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T3 - 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

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ER -

Automated monitoring of airgap eccentricity for inverter-fed induction motors under standstill conditions

Abstract

Publication series

Other

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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