Comprehensive Monitoring of FieldWinding Short Circuits for Salient Pole Synchronous Motors

Jangho Yun, Sanguk Park, Chanseung Yang, Yonghyun Park, Sang Bin Lee, Greg C. Stone, Mladen Sasic

Research output: Contribution to journalArticle

Abstract

Interturn insulation failure in the field winding of synchronous motors is a common problem that can lead to degradation in performance and accelerated wear of motor components. Existing off-line tests for detecting this fault are known to be unreliable and inconvenient to perform, as they require motor disassembly. On-line monitoring based on airgap flux monitoring has been proven to be successful, but could lack sensitivity for cases where the number of turns per pole is large. In addition, field winding turn shorts can be intermittent depending on the centrifugal force and could be unobservable at standstill or under steady state operation. Therefore, monitoring of the turn faults under standstill and starting conditions with high sensitivity and without motor disassembly is desirable. In this paper, the detection of field winding short circuits for salient pole synchronous motors based on an airgap search coil under the starting transient, and new methods for standstill testing without motor disassembly are proposed. 2D FE analysis and experimental testing on a 30 kW motor are given to verify the claims made. It is shown that the proposed set of tests can provide sensitive and reliable detection of field winding short circuits under standstill and starting conditions.

Original languageEnglish
JournalIEEE Transactions on Energy Conversion
DOIs
Publication statusAccepted/In press - 2019 Jan 1

Fingerprint

Synchronous motors
Short circuit currents
Poles
Monitoring
Testing
Insulation
Wear of materials
Fluxes
Degradation

Keywords

  • Airgap Flux
  • Circuit faults
  • Field Winding
  • Induction motors
  • Monitoring
  • Off-line Testing
  • Rotors
  • Salient Pole Rotor
  • Search Coil
  • Starting
  • Stator windings
  • Synchronous Motor
  • Synchronous motors
  • Windings

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Comprehensive Monitoring of FieldWinding Short Circuits for Salient Pole Synchronous Motors. / Yun, Jangho; Park, Sanguk; Yang, Chanseung; Park, Yonghyun; Lee, Sang Bin; Stone, Greg C.; Sasic, Mladen.

In: IEEE Transactions on Energy Conversion, 01.01.2019.

Research output: Contribution to journalArticle

Yun, Jangho ; Park, Sanguk ; Yang, Chanseung ; Park, Yonghyun ; Lee, Sang Bin ; Stone, Greg C. ; Sasic, Mladen. / Comprehensive Monitoring of FieldWinding Short Circuits for Salient Pole Synchronous Motors. In: IEEE Transactions on Energy Conversion. 2019.
@article{e82a4af5ff654671b7f04cfb66bc88da,
title = "Comprehensive Monitoring of FieldWinding Short Circuits for Salient Pole Synchronous Motors",
abstract = "Interturn insulation failure in the field winding of synchronous motors is a common problem that can lead to degradation in performance and accelerated wear of motor components. Existing off-line tests for detecting this fault are known to be unreliable and inconvenient to perform, as they require motor disassembly. On-line monitoring based on airgap flux monitoring has been proven to be successful, but could lack sensitivity for cases where the number of turns per pole is large. In addition, field winding turn shorts can be intermittent depending on the centrifugal force and could be unobservable at standstill or under steady state operation. Therefore, monitoring of the turn faults under standstill and starting conditions with high sensitivity and without motor disassembly is desirable. In this paper, the detection of field winding short circuits for salient pole synchronous motors based on an airgap search coil under the starting transient, and new methods for standstill testing without motor disassembly are proposed. 2D FE analysis and experimental testing on a 30 kW motor are given to verify the claims made. It is shown that the proposed set of tests can provide sensitive and reliable detection of field winding short circuits under standstill and starting conditions.",
keywords = "Airgap Flux, Circuit faults, Field Winding, Induction motors, Monitoring, Off-line Testing, Rotors, Salient Pole Rotor, Search Coil, Starting, Stator windings, Synchronous Motor, Synchronous motors, Windings",
author = "Jangho Yun and Sanguk Park and Chanseung Yang and Yonghyun Park and Lee, {Sang Bin} and Stone, {Greg C.} and Mladen Sasic",
year = "2019",
month = "1",
day = "1",
doi = "10.1109/TEC.2019.2905262",
language = "English",
journal = "IEEE Transactions on Energy Conversion",
issn = "0885-8969",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - Comprehensive Monitoring of FieldWinding Short Circuits for Salient Pole Synchronous Motors

AU - Yun, Jangho

AU - Park, Sanguk

AU - Yang, Chanseung

AU - Park, Yonghyun

AU - Lee, Sang Bin

AU - Stone, Greg C.

AU - Sasic, Mladen

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Interturn insulation failure in the field winding of synchronous motors is a common problem that can lead to degradation in performance and accelerated wear of motor components. Existing off-line tests for detecting this fault are known to be unreliable and inconvenient to perform, as they require motor disassembly. On-line monitoring based on airgap flux monitoring has been proven to be successful, but could lack sensitivity for cases where the number of turns per pole is large. In addition, field winding turn shorts can be intermittent depending on the centrifugal force and could be unobservable at standstill or under steady state operation. Therefore, monitoring of the turn faults under standstill and starting conditions with high sensitivity and without motor disassembly is desirable. In this paper, the detection of field winding short circuits for salient pole synchronous motors based on an airgap search coil under the starting transient, and new methods for standstill testing without motor disassembly are proposed. 2D FE analysis and experimental testing on a 30 kW motor are given to verify the claims made. It is shown that the proposed set of tests can provide sensitive and reliable detection of field winding short circuits under standstill and starting conditions.

AB - Interturn insulation failure in the field winding of synchronous motors is a common problem that can lead to degradation in performance and accelerated wear of motor components. Existing off-line tests for detecting this fault are known to be unreliable and inconvenient to perform, as they require motor disassembly. On-line monitoring based on airgap flux monitoring has been proven to be successful, but could lack sensitivity for cases where the number of turns per pole is large. In addition, field winding turn shorts can be intermittent depending on the centrifugal force and could be unobservable at standstill or under steady state operation. Therefore, monitoring of the turn faults under standstill and starting conditions with high sensitivity and without motor disassembly is desirable. In this paper, the detection of field winding short circuits for salient pole synchronous motors based on an airgap search coil under the starting transient, and new methods for standstill testing without motor disassembly are proposed. 2D FE analysis and experimental testing on a 30 kW motor are given to verify the claims made. It is shown that the proposed set of tests can provide sensitive and reliable detection of field winding short circuits under standstill and starting conditions.

KW - Airgap Flux

KW - Circuit faults

KW - Field Winding

KW - Induction motors

KW - Monitoring

KW - Off-line Testing

KW - Rotors

KW - Salient Pole Rotor

KW - Search Coil

KW - Starting

KW - Stator windings

KW - Synchronous Motor

KW - Synchronous motors

KW - Windings

UR - http://www.scopus.com/inward/record.url?scp=85063386062&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063386062&partnerID=8YFLogxK

U2 - 10.1109/TEC.2019.2905262

DO - 10.1109/TEC.2019.2905262

M3 - Article

JO - IEEE Transactions on Energy Conversion

JF - IEEE Transactions on Energy Conversion

SN - 0885-8969

ER -