Surge Test-based Identification of Stator Insulation Component with PD Activity for Low Voltage AC Motors

Sang Bin Lee; Alireza Naeini; Shesha Jayaram; Greg C. Stone; Mladen Sasic

doi:10.1109/DEMPED.2019.8864864

Surge Test-based Identification of Stator Insulation Component with PD Activity for Low Voltage AC Motors

Sang Bin Lee, Alireza Naeini, Shesha Jayaram, Greg C. Stone, Mladen Sasic

School of Electrical Engineering

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

1 Citation (Scopus)

Abstract

Partial discharge (PD) has been identified as one of the root causes of stator insulation failure even for low voltage (LV) ac motors. For reliable operation of variable frequency drive (VFD) motors, a standard acceptance test procedure (IEC STD 60034-18-41) to ensure PD-free operation of LV motors was recently developed. Although the test can verify whether PD exists in the stator for a voltage surge with predetermined voltage level and risetime, the information on where PD activity is present in the stator insulation is not clearly provided. In this paper, a test method for applying variable risetime surge voltage is proposed for identifying the component of stator insulation where PD occurs in the LV random wound motor stator. The proposed test allows the user to locate whether PD is in the turn, phase, or ground insulation. This information is critical for lowering the PD inception voltage for improving the motor reliability through insulation system design/manufacturing or motor/drive system reconfiguration. The test is implemented with a 4.5 kV variable risetime surge generator prototype, and 4 LV ac motors are tested to show where PD is likely to occur in commercial LV motors.

Original language	English
Title of host publication	Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1-7
Number of pages	7
ISBN (Electronic)	9781728118321
DOIs	https://doi.org/10.1109/DEMPED.2019.8864864
Publication status	Published - 2019 Aug
Event	12th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019 - Toulouse, France Duration: 2019 Aug 27 → 2019 Aug 30

Publication series

Name	Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019

Conference

Conference	12th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019
Country/Territory	France
City	Toulouse
Period	19/8/27 → 19/8/30

Keywords

AC motors
Impulse testing
Insulation testing
Partial discharge (PD)
Surges

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Mechanical Engineering
Safety, Risk, Reliability and Quality

Access to Document

10.1109/DEMPED.2019.8864864

Cite this

Lee, S. B., Naeini, A., Jayaram, S., Stone, G. C., & Sasic, M. (2019). Surge Test-based Identification of Stator Insulation Component with PD Activity for Low Voltage AC Motors. In Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019 (pp. 1-7). [8864864] (Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/DEMPED.2019.8864864

Surge Test-based Identification of Stator Insulation Component with PD Activity for Low Voltage AC Motors. / Lee, Sang Bin; Naeini, Alireza; Jayaram, Shesha et al.
Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 1-7 8864864 (Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019).

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

Lee, SB, Naeini, A, Jayaram, S, Stone, GC & Sasic, M 2019, Surge Test-based Identification of Stator Insulation Component with PD Activity for Low Voltage AC Motors. in Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019., 8864864, Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019, Institute of Electrical and Electronics Engineers Inc., pp. 1-7, 12th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019, Toulouse, France, 19/8/27. https://doi.org/10.1109/DEMPED.2019.8864864

Lee SB, Naeini A, Jayaram S, Stone GC, Sasic M. Surge Test-based Identification of Stator Insulation Component with PD Activity for Low Voltage AC Motors. In Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 1-7. 8864864. (Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019). doi: 10.1109/DEMPED.2019.8864864

Lee, Sang Bin ; Naeini, Alireza ; Jayaram, Shesha et al. / Surge Test-based Identification of Stator Insulation Component with PD Activity for Low Voltage AC Motors. Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 1-7 (Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019).

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abstract = "Partial discharge (PD) has been identified as one of the root causes of stator insulation failure even for low voltage (LV) ac motors. For reliable operation of variable frequency drive (VFD) motors, a standard acceptance test procedure (IEC STD 60034-18-41) to ensure PD-free operation of LV motors was recently developed. Although the test can verify whether PD exists in the stator for a voltage surge with predetermined voltage level and risetime, the information on where PD activity is present in the stator insulation is not clearly provided. In this paper, a test method for applying variable risetime surge voltage is proposed for identifying the component of stator insulation where PD occurs in the LV random wound motor stator. The proposed test allows the user to locate whether PD is in the turn, phase, or ground insulation. This information is critical for lowering the PD inception voltage for improving the motor reliability through insulation system design/manufacturing or motor/drive system reconfiguration. The test is implemented with a 4.5 kV variable risetime surge generator prototype, and 4 LV ac motors are tested to show where PD is likely to occur in commercial LV motors.",

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AB - Partial discharge (PD) has been identified as one of the root causes of stator insulation failure even for low voltage (LV) ac motors. For reliable operation of variable frequency drive (VFD) motors, a standard acceptance test procedure (IEC STD 60034-18-41) to ensure PD-free operation of LV motors was recently developed. Although the test can verify whether PD exists in the stator for a voltage surge with predetermined voltage level and risetime, the information on where PD activity is present in the stator insulation is not clearly provided. In this paper, a test method for applying variable risetime surge voltage is proposed for identifying the component of stator insulation where PD occurs in the LV random wound motor stator. The proposed test allows the user to locate whether PD is in the turn, phase, or ground insulation. This information is critical for lowering the PD inception voltage for improving the motor reliability through insulation system design/manufacturing or motor/drive system reconfiguration. The test is implemented with a 4.5 kV variable risetime surge generator prototype, and 4 LV ac motors are tested to show where PD is likely to occur in commercial LV motors.

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Surge Test-based Identification of Stator Insulation Component with PD Activity for Low Voltage AC Motors

Abstract

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Keywords

ASJC Scopus subject areas

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