An advanced Technique for Detecting Inter-laminar Stator Core Faults in Large Electric Machines

Sang Bin Lee, Manoj R. Shah, Gerald B. Kliman, W. Tony Mall, N. Kutty Nair, R. Mark Lasted

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

An advanced technique for detecting incipient inter-laminar insulation failure in stator cores of large electric machines is proposed in this paper. The proposed scheme is an off-line method based on low flux stator core excitation that employs a new probe. An iron-core probe is placed in the wedge depression area of the stator and scanned axially to detect the variation in the measured flux due to a fault. Two fault indicators that provide clear indication on fault severity and location are proposed in this paper. A 120MW AC machine stator was tested under a number of intentionally inserted fault conditions using a portable field equipment recently developed. The experimental results show that the fault existence, location, and severity can be determined reliably using the proposed scheme. It is also shown that the fault detection sensitivity and reliability, inspection speed, and user convenience are significantly enhanced.

Original languageEnglish
Title of host publicationConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Pages1374-1381
Number of pages8
Volume2
Publication statusPublished - 2003
Externally publishedYes
Event2003 IEEE Industry Applications Conference; 38th IAS Annual Meeting: Crossroads To Innovation - Salt Lake City, UT, United States
Duration: 2003 Oct 122003 Oct 16

Other

Other2003 IEEE Industry Applications Conference; 38th IAS Annual Meeting: Crossroads To Innovation
CountryUnited States
CitySalt Lake City, UT
Period03/10/1203/10/16

Fingerprint

Electric machinery
Stators
Fluxes
Electric fault location
Fault detection
Insulation
Inspection
Iron

Keywords

  • AC machines, Inter-laminar insulation failure, Stator core fault, Regular maintenance, Stator core inspection, Fault diagnostics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Lee, S. B., Shah, M. R., Kliman, G. B., Mall, W. T., Nair, N. K., & Lasted, R. M. (2003). An advanced Technique for Detecting Inter-laminar Stator Core Faults in Large Electric Machines. In Conference Record - IAS Annual Meeting (IEEE Industry Applications Society) (Vol. 2, pp. 1374-1381)

An advanced Technique for Detecting Inter-laminar Stator Core Faults in Large Electric Machines. / Lee, Sang Bin; Shah, Manoj R.; Kliman, Gerald B.; Mall, W. Tony; Nair, N. Kutty; Lasted, R. Mark.

Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). Vol. 2 2003. p. 1374-1381.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lee, SB, Shah, MR, Kliman, GB, Mall, WT, Nair, NK & Lasted, RM 2003, An advanced Technique for Detecting Inter-laminar Stator Core Faults in Large Electric Machines. in Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). vol. 2, pp. 1374-1381, 2003 IEEE Industry Applications Conference; 38th IAS Annual Meeting: Crossroads To Innovation, Salt Lake City, UT, United States, 03/10/12.
Lee SB, Shah MR, Kliman GB, Mall WT, Nair NK, Lasted RM. An advanced Technique for Detecting Inter-laminar Stator Core Faults in Large Electric Machines. In Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). Vol. 2. 2003. p. 1374-1381
Lee, Sang Bin ; Shah, Manoj R. ; Kliman, Gerald B. ; Mall, W. Tony ; Nair, N. Kutty ; Lasted, R. Mark. / An advanced Technique for Detecting Inter-laminar Stator Core Faults in Large Electric Machines. Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). Vol. 2 2003. pp. 1374-1381
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