Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines

Sang Bin Lee; Muhamad Faizan Shaikh; Thotahage Sumadhurie Hansika; Byambasuren Battulga; Han Ju Kim; Carlos A. Platero

doi:10.1109/SDEMPED54949.2023.10271494

Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines

Sang Bin Lee^*
, Muhamad Faizan Shaikh
, Thotahage Sumadhurie Hansika
, Byambasuren Battulga
, Han Ju Kim
, Carlos A. Platero

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

The pole drop test is the most common test applied for detecting shorted turns in the field winding of salient pole synchronous machines (SM). It is a simple off-line test where ac voltage is applied to the field winding, and the asymmetric voltage drop between poles is used as an indicator of shorted turns. However, it is known to have significant risk of giving false indications due to imperfections or defects in the windings, pole, or airgap distribution. Although the test has been applied extensively in the field, the research conducted on the topic is limited. In this paper, new guidelines on testing and interpretation of the pole drop test for improving the sensitivity and reliability of fault detection are presented. An analysis shows that the performance of the test is influenced by the test conditions (rotor in/out, ac/dc voltage) and fault indicator used. Based on the analysis, an insight into how the pole drop test can be performed and interpreted for detecting and classifying field winding, damper bar, and eccentricity faults with maximum sensitivity is provided for improving the reliability of SM fault detection. Experimental results on 5.5 and 30 kVA salient pole SMs are given to support the claims made.

Original language	English
Title of host publication	Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023
Editors	Luca Zarri, Sang Bin Lee
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	581-587
Number of pages	7
ISBN (Electronic)	9798350320770
DOIs	https://doi.org/10.1109/SDEMPED54949.2023.10271494
Publication status	Published - 2023
Event	14th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023 - Chania, Greece Duration: 2023 Aug 28 → 2023 Aug 31

Publication series

Name	Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023

Conference

Conference	14th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023
Country/Territory	Greece
City	Chania
Period	23/8/28 → 23/8/31

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

Damper bar
Eccentricity
False indication
Fault diagnosis
Field winding
Off-line testing
Pole drop test
Salient pole rotor
Wound field synchronous machines

ASJC Scopus subject areas

Signal Processing
Energy Engineering and Power Technology
Computational Mechanics
Electrical and Electronic Engineering
Mechanical Engineering
Safety, Risk, Reliability and Quality

Access to Document

10.1109/SDEMPED54949.2023.10271494

Cite this

Lee, S. B., Shaikh, M. F., Hansika, T. S., Battulga, B., Kim, H. J., & Platero, C. A. (2023). Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines. In L. Zarri, & S. B. Lee (Eds.), Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023 (pp. 581-587). (Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SDEMPED54949.2023.10271494

Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines. / Lee, Sang Bin; Shaikh, Muhamad Faizan; Hansika, Thotahage Sumadhurie et al.
Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023. ed. / Luca Zarri; Sang Bin Lee. Institute of Electrical and Electronics Engineers Inc., 2023. p. 581-587 (Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023).

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

Lee, SB, Shaikh, MF, Hansika, TS, Battulga, B, Kim, HJ & Platero, CA 2023, Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines. in L Zarri & SB Lee (eds), Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023. Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023, Institute of Electrical and Electronics Engineers Inc., pp. 581-587, 14th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023, Chania, Greece, 23/8/28. https://doi.org/10.1109/SDEMPED54949.2023.10271494

Lee SB, Shaikh MF, Hansika TS, Battulga B, Kim HJ, Platero CA. Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines. In Zarri L, Lee SB, editors, Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023. Institute of Electrical and Electronics Engineers Inc. 2023. p. 581-587. (Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023). doi: 10.1109/SDEMPED54949.2023.10271494

Lee, Sang Bin ; Shaikh, Muhamad Faizan ; Hansika, Thotahage Sumadhurie et al. / Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines. Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023. editor / Luca Zarri ; Sang Bin Lee. Institute of Electrical and Electronics Engineers Inc., 2023. pp. 581-587 (Proceedings of the 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2023).

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title = "Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines",

abstract = "The pole drop test is the most common test applied for detecting shorted turns in the field winding of salient pole synchronous machines (SM). It is a simple off-line test where ac voltage is applied to the field winding, and the asymmetric voltage drop between poles is used as an indicator of shorted turns. However, it is known to have significant risk of giving false indications due to imperfections or defects in the windings, pole, or airgap distribution. Although the test has been applied extensively in the field, the research conducted on the topic is limited. In this paper, new guidelines on testing and interpretation of the pole drop test for improving the sensitivity and reliability of fault detection are presented. An analysis shows that the performance of the test is influenced by the test conditions (rotor in/out, ac/dc voltage) and fault indicator used. Based on the analysis, an insight into how the pole drop test can be performed and interpreted for detecting and classifying field winding, damper bar, and eccentricity faults with maximum sensitivity is provided for improving the reliability of SM fault detection. Experimental results on 5.5 and 30 kVA salient pole SMs are given to support the claims made.",

keywords = "Damper bar, Eccentricity, False indication, Fault diagnosis, Field winding, Off-line testing, Pole drop test, Salient pole rotor, Wound field synchronous machines",

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AB - The pole drop test is the most common test applied for detecting shorted turns in the field winding of salient pole synchronous machines (SM). It is a simple off-line test where ac voltage is applied to the field winding, and the asymmetric voltage drop between poles is used as an indicator of shorted turns. However, it is known to have significant risk of giving false indications due to imperfections or defects in the windings, pole, or airgap distribution. Although the test has been applied extensively in the field, the research conducted on the topic is limited. In this paper, new guidelines on testing and interpretation of the pole drop test for improving the sensitivity and reliability of fault detection are presented. An analysis shows that the performance of the test is influenced by the test conditions (rotor in/out, ac/dc voltage) and fault indicator used. Based on the analysis, an insight into how the pole drop test can be performed and interpreted for detecting and classifying field winding, damper bar, and eccentricity faults with maximum sensitivity is provided for improving the reliability of SM fault detection. Experimental results on 5.5 and 30 kVA salient pole SMs are given to support the claims made.

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Getting the Most Out of the Pole Drop Test for Detecting Rotor Faults in Salient Pole Synchronous Machines

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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