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 language | English |
|---|---|
| Journal | IEEE Transactions on Energy Conversion |
| DOIs | |
| Publication status | Accepted/In press - 2019 Jan 1 |
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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 journal › Article
}
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 -