Mixed resistive unbalance and winding inter-turn faults model of permanent magnet synchronous motors

This work analyzes the behavior of surface-mounted permanent magnet synchronous motors (SPMSMs) operating under stator faults. The studied faults are resistive unbalance and winding inter-turn short circuits, which may lead to unbalanced conditions of the motor. Both faults may reduce motor efficien...

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Bibliographic Details
Published in:Electrical engineering 2015-03, Vol.97 (1), p.75-85
Main Authors: Urresty, Julio-César, Riba, Jordi-Roger, Romeral, Luís, Ortega, Juan Antonio
Format: Article
Language:English
Subjects:
bar
connections
demagnetization
diagnosis
drives
Economics and Management
Electric motors
Electric motors, Synchronous
Electrical Engineering
Electrical Machines and Networks
Energia elèctrica
Energies
Energy Policy
Engineering
Enginyeria mecànica
fault diagnosis
harmonic analysis
induction machines
inter-turn short-circuit
Motors
Motors elèctrics
Motors elèctrics sincrònics
Original Paper
permanent magnet synchronous motor
Power Electronics
resistive unbalance
Short circuits
signature analysis
stator
Testing
zero-sequence voltage component
Àrees temàtiques de la UPC
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Summary:This work analyzes the behavior of surface-mounted permanent magnet synchronous motors (SPMSMs) operating under stator faults. The studied faults are resistive unbalance and winding inter-turn short circuits, which may lead to unbalanced conditions of the motor. Both faults may reduce motor efficiency and performance and produce premature ageing. This work develops an analytical model of the motor when operating under stator faults. By this way, the theoretical basis to understand the effects of resistive unbalance and stator winding inter-turn faults in SPMSMs is settled. This work also compares two methods for detecting and discriminating both faults. For this purpose, a method based on the analysis of the zero-sequence voltage component is presented, which is compared to the traditional method, i.e. the analysis of the stator currents harmonics. Both simulation and experimental results presented in this work show the potential of the zero-sequence voltage component method to provide helpful and reliable data to carry out a simultaneous diagnosis of resistive unbalance and stator winding inter-turn faults.
ISSN:0948-7921
0003-9039
1432-0487
DOI:10.1007/s00202-014-0316-z